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2020  Silverado 4500 HD, 5500 HD and 6500 HD MECHANICAL
S = Standard Equipment   A = Available   -- (dashes) = Not Available   D = ADI Available
= Included in Equipment Group    = Included in Equipment Group but upgradeable
*Indicates availability of feature on multiple models. For example, it indicates feature availability on 2WD and 4WD Models or Rear wheel drive and All-wheel drive Models.
Codes listed in the shaded column titled Ref. Only RPO Code are for internal use only and should not be ordered.
Free
Flow
RPO
Code
Ref.
Only
RPO
Code
 DESCRIPTION


CC56403 2WD Reg CabCC56043 2WD Crew CabCK56403 4WD Reg CabCK56043 4WD Crew CabCC56403 2WD Reg CabCC56043 2WD Crew CabCK56403 4WD Reg CabCK56043 4WD Crew Cab

1WT
1WT
1WT
1WT
1LT
1LT
1LT
1LT
  R7M4500 HD Series
1 - Included and only available with (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR or (C7R) 16,500 lbs. GVWR.		A1A1A1A1A1A1A1A1
  R7N5500 HD Series
1 - Included and only available with (GZX) 17,500 lbs. GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR.		A1A1A1A1A1A1A1A1
  R7P6500 HD Series
1 - Included and only available with (GZH) 21,500 lbs. GVWR, (C9U) 22,940 lbs. GVWR or (DD7) 23,500 lbs. GVWR.
2 - Included and only available with (DD5) 21,000 lbs. GVWR, (C5D) 22,500 lbs. GVWR or (DB9) 23, 000 lbs. GVWR.		A1A1A2A2A1A1A2A2
R9Y   Fleet Free Maintenance Credit. This option code provides a credit in lieu of the free oil changes, tire rotations and inspections for one maintenance service during 1st year of ownership. The invoice will detail the applicable credit. The customer will be responsible for all oil change, tire rotations and inspections costs for this vehicle.
1 - Requires one of the following Fleet or Government order types: FBC, FBN, FCA, FCN, FEF, FLS, FNR, FRC or FGO.		A1A1A1A1A1A1A1A1
VYU   Snow Plow Prep Package, includes (UNL) auxiliary harness for headlamps and turn signals, (KW5) 220-amp alternator, forward lamp wiring harness and (TRW) provision for cab roof mounted lamp/beacon
1 - Note: (KW5) 220-amp alternator can be upgraded to (KHB) dual, 150 amps and 220 amps each alternators.		A1A1A1A1A1A1A1A1
PCH   Motorhome Package
1 - Requires Motorhome transmission (MBW), (ME0), (MIX) or (MF0).		A1A1A1A1A1A1A1A1
YF2   Emergency Service Package, includes (KHB) dual alternators, (9L7) upfitter box switchbank, (K40) exhaust brake, (UZF) backup alarm and (5DY) end of cab wiring provisions
1 - Requires (FPF) DPF, diesel particulate filter, manual regeneration and Emergency Service transmission, (MBY), (MH1), (MHV) or (MG0). Not available with (9D4) Governor, electronic speed sensor set to 55 MPH, SEO. Not available with (G80) heavy-duty locking rear differential.		A1A1A1A1A1A1A1A1
ANC   NEW!  Shuttle Bus Package
1 - Requires (PTX) Power Take-Off (PTO), not installed and (MA6) or (MB6) Transmission.		A1A1A1A1A1A1A1A1
ANK   NEW!  School Bus (Non-Conforming) Package
1 - Requires (PTX) Power Take-Off (PTO), not installed and (MA6) or (MB6) Transmission.		A1A1A1A1A1A1A1A1
PCJ   NEW!  Vocational Specific Heavy Suspension Package, For 141" or 165" WB trucks only. Allows the selection of 7,000 lbs., 8,000 lbs., front axles and/or 15,500 lbs. rear spring suspension on trucks that will be upfitted with the following vocational bodies: Utility/Service Bodies, Aerial Lift/Bucket bodies, Front Plow/Rear Spreader Applications, and Landscape Dump Bodies.
1 - Requires (FQT) 141" Wheelbase or (ED9) 165" Wheelbase and (FTA) 7,000 lbs. Front axle/(FK6) 7,000 lbs. Front suspension or (FTL) 8,000 lbs. Front axle/(FSN) 8,000 lbs. Front suspension and/or (FU7) 15,500 lbs. rear suspension.
2 - Requires (ED9) 165" Wheelbase and (FU7) 15,500 lbs. rear suspension.		A1--    A2--    A1--    A2--   
KUT   Air Compressor Accessory Drive
1 - Not available with (NSQ) dual fuel tanks, front and rear, 65 gallon total or (NVK) front 25 gallon fuel tank with (FQT) 141" wheelbase. Required with all models equipped with Rear Air Suspension (G40/GP1/GP8). Available as free flow option on all models without Rear Air Suspension.
2 - Required with all models equipped with Rear Air Suspension (G40/GP1/GP8). Available as free flow option on all models without Rear Air Suspension. 		A1A2A    A    A1A2A    A   
JPY   Air Dryer, heated
1 - Requires (KUT) Air Compressor Accessory Drive. 		A1A1A1A1A1A1A1A1
  KG4Alternator, 150 ampsS    S    S    S    S    S    S    S   
KW5   Alternator, 220 amps
1 - Included with (VYU) Snow Plow Prep Package.		A1A1A1A1A1A1A1A1
KHB   Alternators, dual, 150 amps and 220 amps each
1 - Included with (YF2) Emergency Service Package.		A1A1A1A1A1A1A1A1
  7Y7Batteries, heavy-duty dual 1100 cold-cranking amps, includes battery box mounted to left side under cabS    S    S    S    S    S    S    S   
7Y8   Batteries, heavy-duty dual 1300 cold-cranking amps, includes battery box mounted to left side under cabA    A    A    A    A    A    A    A   
7Y9   Batteries, heavy-duty triple 2250 cold-cranking amps, temporarily mounted behind cab, no battery box included
1 - Not available with (NVK) front 25 gallon fuel tank or (NSQ) dual fuel tanks, front and rear, 65 gallon total with (FQT) 141" wheelbase.
2 - Not available with (NVK) front 25 gallon fuel tank or (NSQ) dual fuel tanks, front and rear, 65 gallon total with (FNV) 175" wheelbase.		A1A2A    A2A1A2A    A2
BTN   Battery, top post threaded, battery jump start stud (located on battery box)
1 - Requires (7Y7) 1100 cold-cranking amps batteries or (7Y8) 1300 cold-cranking amps batteries.		A1A1A1A1A1A1A1A1
  J48Brakes, hydraulic, heavy duty Bosch/Meritor/Wabco system with 4-channel (ABS)
1 - Includes (J69) driveline park brake.		S1S1S1S1S1S1S1S1
  J69Brake, parking, driveline park brake systemS    S    S    S    S    S    S    S   
  N4EEmissions, USA 50 State certifiedS    S    S    S    S    S    S    S   
  N4CEmissions, 50 state certificationS    S    S    S    S    S    S    S   
  NPRExhaust system, right side exit, behind rear wheels
1 - Requires (FQT) 141" wheelbase.		S1--    --    --    S1--    --    --   
N12   Exhaust system, rear exit
1 - Not available with (FQT) 141" wheel base.		A1S    S    S    A1S    S    S   
NPJ   Exhaust system, left side exit ahead of rear wheels
1 - Not available with (NVK) front 25 gallon fuel tank. Available on the following wheelbases: (ER2) 189" wheelbase, (ED5) 201" wheelbase, (EQB) 219" wheelbase, (FPN) 231" wheelbase, (FBC) 243" wheelbase. Not available with (NSQ) dual fuel tanks.
2 - Available on the following wheelbases: (EM1) 199" wheelbase, (FNV) 175" wheelbase or (FRP) 235" wheelbase. Not available with (NSQ) dual fuel tanks or (NVK) front 25 gallon fuel tank.		A1A2A1A2A1A2A1A2
NPK   Exhaust system, right side exit ahead of rear wheels
1 - Requires one of the following wheelbases: (ER2) 189", (ED5) 201", (EQB) 219", (FPN) 231" or (FBC) 243".
2 - Requires (EM1) 199" wheelbase, (FNV) 175" wheelbase or (FRP) 235" wheelbase.		A1A2A1A2A1A2A1A2
K40   Exhaust brake
1 - Included with (YF2) Emergency Service Package.		A1A1A1A1A1A1A1A1
K05   Engine block heaterA    A    A    A    A    A    A    A   
  L5DEngine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel compatible, 350 hp @ 2700 rpm, 700 lb.-ft. torque @ 1600 rpmS    S    S    S    S    S    S    S   
FPF   DPF, diesel particulate filter, manual regeneration, customer regeneration will not be allowed until the DPF load percentage has reached 100% full and a driver information center (DIC) message has been shown
1 - Requires (K40) exhaust brake. Required with (YF2) Emergency Service Package.		A1A1A1A1A1A1A1A1
  FHXFuel, diesel B20S    S    S    S    S    S    S    S   
VG7   Label information, clean idle, optional door locationA    A    A    A    A    A    A    A   
KT0   Heater hose, silicone
1 - Requires (KUD) Heater hose clamps, (Breeze) Belleville washer type.		A1A1A1A1A1A1A1A1
KUD   Heater hose clamps, (Breeze) Belleville washer typeA    A    A    A    A    A    A    A   
  N2LFuel tank, rear only, 40 gallon, mounted between frame side rails and behind rear axleS    S    S    S    S    S    S    S   
NVK   Fuel tank, front, 25 gallonA    A    A    A    A    A    A    A   
NSQ   Fuel tank, front and rear, 65 gallon totalA    A    A    A    A    A    A    A   
8E4   Additional fuel, 5 gallonsA    A    A    A    A    A    A    A   
NXG   Additional fuel, 20 gallons
1 - Not available with (NVK) front 25 gallon fuel tank.		A1A1A1A1A1A1A1A1
NXO   Additional fuel, 40 gallons
1 - Requires (NSQ) dual fuel tanks. No longer available for the model year.		A1A1A1A1A1A1A1A1
C7Y   NEW!  GVWR, 14,001 lbs. (6350 kg)
1 - Silverado 4500 HD with (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (FN1) 10k rear axle and (GR3) 11k rear suspension. Requires (G68) Rear shock absorbers. (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (G68) Rear shock absorbers. (3) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (4) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (5) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (6) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 4500 HD without (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (FN1) 10k rear axle and (GR3) 11k rear suspension and (G68) Rear shock absorbers (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension and (G68) Rear shock absorbers (3) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (4) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (5) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k rear air suspension (6) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension, (GP8) 15.5 rear air suspension.
2 - Silverado 4500 HD Crew Cab 2WD models requires one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k rear air suspension (2) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension, (GP8) 15.5 rear air suspension.
3 - Silverado 4500 HD 4X4 models requires one of the following combinations: (1) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension (2) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension.		A1A2A3A3A1A2A3A3
C5B   GVWR, 15,000 lbs. (6804 kg)
1 - Silverado 4500 HD with (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (FN1) 10k rear axle and (GR3) 11k rear suspension. Requires (G68) Rear shock absorbers. (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (G68) Rear shock absorbers. (3) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (4) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (5) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (6) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 4500 HD without (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (FN1) 10k rear axle and (GR3) 11k rear suspension and (G68) Rear shock absorbers (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension and (G68) Rear shock absorbers (3) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (4) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (5) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k rear air suspension (6) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension, (GP8) 15.5 rear air suspension.
2 - Silverado 4500 HD Crew Cab 2WD models requires one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k rear air suspension (2) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension, (GP8) 15.5 rear air suspension.
3 - Silverado 4500 HD 4X4 models requires one of the following combinations: (1) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension (2) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension.		A1A2A3A3A1A2A3A3
C7P   GVWR, 16,000 lbs. (7257 kg)
1 - Silverado 4500 HD with (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (FN1) 10k rear axle and (GR3) 11k rear suspension. Requires (G68) Rear shock absorbers. (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (G68) Rear shock absorbers. (3) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (4) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (5) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (6) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 4500 HD without (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (FN1) 10k rear axle and (GR3) 11k rear suspension and (G68) Rear shock absorbers (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension and (G68) Rear shock absorbers (3) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (4) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (5) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k rear air suspension (6) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension, (GP8) 15.5 rear air suspension.
2 - Silverado 4500 HD Crew Cab 2WD models requires one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k rear air suspension (2) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension, (GP8) 15.5 rear air suspension.
3 - Silverado 4500 HD 4X4 models requires one of the following combinations: (1) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension (2) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension.		A1A2A3A3A1A2A3A3
  C7RGVWR, 16,500 lbs. (7484 kg)
1 - Silverado 4500 HD models with (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (G68) Rear shock absorbers. (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (3) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (4) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (5) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 4500 HD models without (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension and (G68) Rear shock absorbers (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (3) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (4) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12K Rear air suspension (5) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.
2 - Silverado 4500 HD Crew Cab 2WD models requires one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12K Rear air suspension (2) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.
3 - Silverado 4500 HD 4X4 models requires one of the following combinations: (1) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension (2) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension.		S1S2S3S3S1S2S3S3
GZX   GVWR, 17,500 lbs. (7938 kg)
1 - Silverado 5500 HD with (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (3) (FTA) 7k front axle and (FK6) 7k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (4) (FTA) 7k front axle and (FK6) 7k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (5) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 5500 HD without (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (3) (FTA) 7k front axle and (FK6) 7k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k Rear air suspension (4) (FTA) 7k front axle and (FK6) 7k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension, (G40) 12k Rear air suspension or (GP1) 13.5k Rear air suspension (5) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.
2 - Silverado 5500 HD Crew Cab 2WD models requires one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k Rear air suspension (2) (FTA) 7k front axle and (FK6) 7k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension, (G40) 12k Rear air suspension or (GP1) 13.5k Rear air suspension (3) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.
3 - Silverado 5500 HD 4X4 models requires one of the following combinations: (1) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (FN1) 10k rear axle or (GL4) 11k rear axle and (GR3) 11k rear suspension (2) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension (3) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension		A1A2A3A3A1A2A3A3
GZJ   GVWR, 18,000 lbs. (8165 kg)
1 - Silverado 5500HD with (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (3) (FTA) 7k front axle and (FK6) 7k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (4) (FTA) 7k front axle and (FK6) 7k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (5) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 5500HD without (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (3) (FTA) 7k front axle and (FK6) 7k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k Rear air suspension (4) (FTA) 7k front axle and (FK6) 7k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension, (G40) 12k Rear air suspension or (GP1) 13.5k Rear air suspension (5) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.
2 - Silverado 5500 HD Crew Cab 2WD models requires one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension or (G40) 12k Rear air suspension (2) (FTA) 7k front axle and (FK6) 7k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension, (G40) 12k Rear air suspension or (GP1) 13.5k Rear air suspension (3) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.
3 - Silverado 5500 HD 4X4 models requires one of the following combinations: (1) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (GL4) 11k rear axle and (GR3) 11k rear suspension (2) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension (3) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension.		A1A2A3A3A1A2A3A3
GZG   GVWR, 19,500 lbs. (8845 kg)
1 - Silverado 5500HD with (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension. Requires (G68) Rear shock absorbers. (3) (FTA) 7k front axle and (FK6) 7k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (4) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (5) (FTL) 8k front axle and (FSN) 8k front suspension and (HD2) 13.5k rear axle with (GR4) 13.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (6) (FTL) 8k front axle and (FSN) 8k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 5500HD without (FQT) 141" wheelbase requires one of the following combinations: (1) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (2) (FTC) 6.25k front axle and (FTW) 6.25k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension and (G68) Rear shock absorbers (3) (FTA) 7k front axle and (FK6) 7k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension or (GP1) 13.5k Rear air suspension (4) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension (5) (FTL) 8k front axle and (FSN) 8k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension, (G40) 12k rear air suspension or (GP1) 13.5k Rear air suspension (6) (FTL) 8k front axle and (FSN) 8k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.
2 - Silverado 5500 HD Crew Cab 2WD models requires one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension or (GP1) 13.5k Rear air suspension (2) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension (3) (FTL) 8k front axle and (FSN) 8k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension, (G40) 12k rear air suspension or (GP1) 13.5k Rear air suspension (4) (FTL) 8k front axle and (FSN) 8k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.
3 - Silverado 5500 HD 4X4 models requires one of the following combinations: (1) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension (2) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension.		A1A2A3A3A1A2A3A3
DD5   GVWR, 21,000 lbs. (9525kg)
1 - Silverado 6500 HD 4X4 models requires one of the following combinations: (1) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension (2) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension.		--    --    A1A1--    --    A1A1
GZH   GVWR, 21,500 lbs. (9752 kg)
1 - Silverado 6500 HD 2WD models with (FQT) 141" wheelbase requires one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (2) (FTL) 8k front axle and (FSN) 8k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. (3) (FTL) 8k front axle and (FSN) 8k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension or (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 6500 HD 2WD models without (FQT) 141" wheelbase requires one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (FU7) 15.5k rear suspension or (GP8) 15.5 rear air suspension. (2) (FTL) 8k front axle and (FSN) 8k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension or (GP1) 13.5k Rear air suspension. (3) (FTL) 8k front axle and (FSN) 8k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.
2 - Silverado 6500 HD Crew Cab 2WD models require one of the following combinations: (1) (FTA) 7k front axle and (FK6) 7k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (FU7) 15.5k rear suspension or (GP8) 15.5 rear air suspension. (2) (FTL) 8k front axle and (FSN) 8k front suspension and (HD2) 13.5k rear axle and (GR4) 13.5k rear suspension or (GP1) 13.5k Rear air suspension. (3) (FTL) 8k front axle and (FSN) 8k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (GR4) 13.5k rear suspension, (FU7) 15.5k rear suspension, (GP1) 13.5K rear air suspension or (GP8) 15.5 rear air suspension.		A1A2--    --    A1A2--    --   
C5D   GVWR, 22,500 lbs. (10,206 kg)
1 - Silverado 6500 HD 4X4 models requires the following combination (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (FU7) 15.5k rear suspension.		--    --    A1A1--    --    A1A1
C9U   GVWR, 22,940 lbs. (10,405 kg)
1 - Silverado 6500 HD 2WD model with (FQT) 141" wheelbase requires the following combination: (FTL) 8k front axle and (FSN) 8k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 6500 HD 2WD model without (FQT) 141" wheelbase requires the following combination: (FTL) 8k front axle and (FSN) 8k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (FU7) 15.5k rear suspension, (GP8) 15.5 rear air suspension.
2 - Silverado 6500 HD Crew Cab 2WD model requires the following combination (FTL) 8k front axle and (FSN) 8k front suspension and (HD1) 15k rear axle or (J27) 15.5k rear axle and one of the following rear suspensions: (FU7) 15.5k rear suspension, (GP8) 15.5 rear air suspension.		A1A2--    --    A1A2--    --   
DB9   NEW!  GVWR , 23,000 lbs. (10,433 kg)
1 - Silverado 6500 HD 4X4 models requires (XDV)/(YAP) Front/Rear tires and the following combination (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (J27) 15.5k rear axle and (FU7) 15.5k rear suspension.		--    --    A1A1--    --    A1A1
DD7   NEW!  GVWR, 23,500 lbs. (10,659 kg)
1 - Silverado 6500 HD 2WD models with (FQT) 141" wheelbase requires (XDV)/(YAP) Front/Rear tires and the following combination: (FTL) 8k front axle and (FSN) 8k front suspension and (J27) 15.5k rear axle and (FU7) 15.5k rear suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package. Silverado 6500 HD 2WD models without (FQT) 141" wheelbase requires (XDV)/(YAP) Front/Rear tires and the following combination: (FTL) 8k front axle and (FSN) 8k front suspension and (J27) 15.5k rear axle and one of the following rear suspensions: (FU7) 15.5k rear suspension or (GP8) 15.5 rear air suspension.
2 - Silverado 6500 HD Crew Cab 2WD model requires (XDV)/(YAP) Front/Rear tires and the following combination (FTL) 8k front axle and (FSN) 8k front suspension and (J27) 15.5k rear axle and one of the following rear suspensions: (FU7) 15.5k rear suspension or (GP8) 15.5 rear air suspension.		A1A2--    --    A1A2--    --   
R6G   26,000 lbs. GCWR (11,793 kg)
1 - Requires 26k GCWR transmission (MWA, MWB, MIU, MIA, MH1, MG0, MIX, MF0, MA6 or MB6).		A1A1A1A1A1A1A1A1
R6I   30,000 lbs. GCWR (13,607 kg)
1 - Requires 30k GCWR transmission (MBV, MBW, MBX, MBY, MJ0, MI0, MHV, ME0).		A1A1A1A1A1A1A1A1
R6W   NEW!  34,000 lbs. GCWR (15,422 kg)
1 - Requires 34k GCWR transmission (MBV/MBW/MBX/MBY/ME0/MHV/MI0/MJ0). Requires (092) Rear axle, 4.30 ratio, and (HD1) 15k rear axle or (J27) 15.5k rear axle.		A1A1A1A1A1A1A1A1
R6X   NEW!  35,000 lbs. GCWR (15,875 kg)
1 - Requires 35k GCWR transmission (MBV/MBW/MBX/MBY/ME0/MHV/MI0/MJ0). Requires (005) Rear axle, 4.56 ratio, and (HD1) 15k rear axle or (J27) 15.5k rear axle.		A1A1--    --    A1A1--    --   
R6Y   NEW!  37,000 lbs. GCWR (16,782 kg)
1 - Requires 37k GCWR transmission (MBV/MBW/MBX/MBY/ME0/MHV/MI0/MJ0). Requires (008) Rear axle, 4.88 ratio, and (HD1) 15k rear axle or (J27) 15.5k rear axle.		A1A1--    --    A1A1--    --   
  066Rear axle, 4.10 ratio, Max road speed: 79 MPHS    S    --    --    S    S    --    --   
092   Rear axle, 4.30 ratio, Max road speed: 75 MPHA    A    S    S    A    A    S    S   
005   Rear axle, 4.56 ratio, Max road speed: 70 MPHA    A    --    --    A    A    --    --   
008   Rear axle, 4.88 ratio, Max road speed: 65 MPHA    A    --    --    A    A    --    --   
  FQTWheelbase, 141" (358.1 cm), 60" CA
1 - Requires (F0C) 49" axle to end of frame, (F0D) 63" axle to end of frame, (F0K) 91" axle to end of frame and (NPR) exhaust. Requires (PCJ) Vocational Specific Heavy Suspension Package, when ordering (FTA) 7,000 lbs. Front axle/(FK6) 7,000 lbs. Front suspension or (FTL) 8,000 lbs. Front axle/(FSN) 8,000 lbs. Front suspension and/or (FU7) 15,500 lbs. rear suspension. Not available with rear air suspensions.		S1--    --    --    S1--    --    --   
ED9   Wheelbase, 165" (419.1 cm), 84" CA
1 - Requires (F0C) 49" axle to end of frame, (F0D) 63" axle to end of frame, (F0K) 91" axle to end of frame. Requires (PCJ) Vocational Specific Heavy Suspension Package, when ordering (FTA) 7,000 lbs. Front axle/(FK6) 7,000 lbs. Front suspension or (FTL) 8,000 lbs. Front axle/(FSN) 8,000 lbs. Front suspension and/or (FU7) 15,500 lbs. rear suspension.		A1--    S1--    A1--    S1--   
ER2   Wheelbase, 189" (480.1 cm), 108" CA
1 - Requires (F0C) 49" axle to end of frame, (F0D) 63" axle to end of frame or (F0I) 75" axle to end of frame.		A1--    A1--    A1--    A1--   
ED5   Wheelbase, 201" (510.5 cm), 120" CA
1 - Requires (F0C) 49" axle to end of frame, (F0D) 63" axle to end of frame or (F0I) 75" axle to end of frame.		A1--    A1--    A1--    A1--   
EQB   Wheelbase, 219" (556.3 cm), 138" CA
1 - Requires (F0I) 75" axle to end of frame.		A1--    A1--    A1--    A1--   
FPN   Wheelbase, 231" (586.7 cm), 150" CA
1 - Requires (F0K) 91" axle to end of frame. 		A1--    A1--    A1--    A1--   
FBC   Wheelbase, 243" (617.2 cm), 162" CA
1 - Requires (F0G) 83" axle to end of frame dimension.		A1--    A1--    A1--    A1--   
  FNVWheelbase, 175" (444.5 cm), 60" CA
1 - Requires (F0C) 49" axle to end of frame. Not available with (G40) 12, 000lbs., (GP1) 13,500 lbs. or (GP8) 15,500 lbs. rear air suspension.		--    S1--    S1--    S1--    S1
EM1   Wheelbase, 199" (505.5 cm), 84" CA
1 - Requires (F0C) 49" axle to end of frame or (F0D) 63" axle to end of frame. 		--    A1--    A1--    A1--    A1
FRP   Wheelbase, 235" (596.9 cm), 120" CA
1 - Requires (F0I) 75" axle to end of frame.		--    A1--    A1--    A1--    A1
  F0CAxle to End of Frame, 49"
1 - Requires wheelbase (ED5) 201", (ED9) 165", (ER2) 189" or (FQT) 141". Not available with (G40), (GP1) or (GP8) rear air suspension.
2 - Requires wheelbase (EM1) 199" or (FNV) 175". Not available with (G40), (GP1) or (GP8) rear air suspension.
3 - Requires wheelbase (ED5) 201", (ED9) 165" or (ER2) 189". Not available with (G40), (GP1) or (GP8) rear air suspension.		S1S2S3S2S1S2S3S2
F0D   Axle to End of Frame, 63"
1 - Requires wheelbase (ED9) 165", (ER2) 189", (ED5) 201" or (FQT) 141" wheelbase.
2 - Requires (EM1) 199" wheelbase.
3 - Requires Wheelbase (ED9) 165", (ER2) 189" or (ED5) 201".		A1A2A3A2A1A2A3A2
F0G   Axle to End of Frame, 83"
1 - Requires wheelbase (FBC) 243".		A1--    A1--    A1--    A1--   
F0I   Axle to End of Frame, 75"
1 - Requires wheelbase (ED5) 201", (EQB) 219" or (ER2) 189".
2 - Requires (FRP) 235" wheelbase. 		A1A2A1A2A1A2A1A2
F0K   Axle to End of Frame, 91"
1 - Requires wheelbase (FPN) 231", (FQT) 141", or (ED9) 165" wheelbase.
2 - Requires wheelbase (FPN) 231" or (ED9) 165" wheelbase.		A1--    A2--    A1--    A2--   
    Steering, power (Bosch S2 8014 Plus)S    S    S    S    S    S    S    S   
  FTDFront axle, 6,000 lbs, Dana Spicer D800-N, "I"-beam, non-driving
1 - NO LONGER AVAILABLE FOR ORDERING. Requires (F95) 6,000 lb. front suspension. Also requires (G68) rear shock absorbers unless rear air suspension is ordered.		S1--    --    --    S1--    --    --   
  FTCNEW!  Front axle, 6,250 lb. (2,835 kg), Dana Spicer D800-N, "I"-beam, non-driving
1 - Requires (FTW) 6,250 lb. front suspension. Includes (G68) rear shock absorbers. Not available with rear air suspensions.		S1--    --    --    S1--    --    --   
FTA   Front axle, 7,000 lbs, Dana Spicer D800-N, "I"-beam, non-driving
1 - Requires (FK6) 7,000 lb. (3,175 kg) front suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package when ordered with (FQT) 141" Wheelbase or (ED9) 165" Wheelbase.
2 - Requires (FK6) 7,000 lb. (3,175 kg) front suspension.		A1S2--    --    A1S2--    --   
  FTBFront axle, 7,500 lbs, Dana Spicer 60-256, single-reduction, front driving--    --    S    S    --    --    S    S   
FTL   Front axle, 8,000 lbs, Dana/Spicer D800-N, "I"-beam, non-driving
1 - Requires (FSN) 8,000 lbs. (3,629 kg) front suspension. Requires (PCJ) Vocational Specific Heavy Suspension Package when ordered with (FQT) 141" Wheelbase or (ED9) 165" Wheelbase.		A1A    --    --    A1A    --    --   
FK6   Front suspension, 7,000 lbs. (3,175 kg) multi-leaf, includes shock absorbersA    S    --    --    A    S    --    --   
  FTVFront suspension, 7,500 lbs. (3,402 kg) multi-leaf, includes shock absorbers--    --    S    S    --    --    S    S   
  F95Front suspension, 6,000 lbs. (2,722 kg) multi-leaf, includes shock absorbers
1 - NO LONGER AVAILABLE FOR ORDERING.		S1--    --    --    S1--    --    --   
  FTWNEW!  Front suspension, 6,250 lbs. (2,835 kg) multi-leaf, includes shock absorbers
1 - Not available with rear air suspensions.		S1--    --    --    S1--    --    --   
FSN   Front suspension, 8,000 lbs. (3,629 kg) multi-leaf, includes shock absorbersA    A    --    --    A    A    --    --   
F59   Front stabilizer barA    A    A    A    A    A    A    A   
  FTNAxle lubricant, front, synthetic oil EmGard FE-75W-90--    --    S    S    --    --    S    S   
FF3   Oil seal for front hub, Chicago Rawhide Nitrile for oil lubricated wheel bearingsA    A    A    A    A    A    A    A   
FG0   Oil filled front hubs, synthetic oil EmGard FE-75W-90
1 - Requires (FF3) Oil seal for front hub.		A1A1--    --    A1A1--    --   
FN1   Rear axle, 10,000 lb. (4,536 kg) Dana Spicer S14-110, single reductionA    S    A    A    A    S    A    A   
GL4   Rear axle, 11,000 lb. (4,999 kg) Dana Spicer S14-110, single reductionS    A    S    S    S    A    S    S   
HD1   Rear axle, 15,000 lb. (6,804 kg) Dana Spicer S16-130, single reductionA    A    A    A    A    A    A    A   
HD2   Rear axle, 13,500 lb. (6,124 kg) Dana Spicer S14-110, single reductionA    A    A    A    A    A    A    A   
J27   Rear axle, 15,500 lb. (7,031 kg), Dana Spicer S16-130, single reduction
1 - Note: 15, 500 lb rear axle capacity can be reduced by rear tire capacity or rear suspension. Maximum axle capacity will not be higher than the rear tire or rear suspension capacity selected for vehicle.		A1A1A1A1A1A1A1A1
  G86Axle, limited slip, Dana Spicer Truetrac, torque proportioning limited slipS    S    S    S    S    S    S    S   
G80   NEW!  Differential, heavy-duty locking rear
1 - Requires (J27) 15,500 lb. rear axle. With (ED9) 165" Wheelbase, requires (J27) 15,500 lb. rear axle and (PCJ) Vocational Specific Heavy Suspension Package or (9C2) 65 MPH road speed governor. Not available with (G40), (GP1) or (GP8) rear air suspensions when ordered with (ED9) 165" wheelbase. Not available with (G86) limited slip rear axle. Not available with (YF2) Emergency Service Package.		A1A1A1A1A1A1A1A1
  GR3Rear suspension, 11,000 (4,990 kg) multi-leaf, vari-rate
1 - Not available with air suspension.		S1S1S    S    S1S1S    S   
GR4   Rear suspension, 13,500 lbs. (6,123 kg) multi-leaf, vari-rate
1 - Not available with air suspension or (GL4) 11,000 lb. (4,999 kg) rear axle.
2 - Not available with (GL4) 11,000 lb. (4,999 kg) rear axle.		A1A1A2A2A1A1A2A2
FU7   Rear suspension, 15,500 lbs. (7,031 kg) multi-leaf, vari-rate
1 - Requires (PCJ) Vocational Specific Heavy Suspension Package when ordered with (FQT) 141" Wheelbase or (ED9) 165" Wheelbase. Not available with air suspension.
2 - Not available with air suspension.
3 - Requires (PCJ) Vocational Specific Heavy Suspension Package when ordered with (ED9) 165" Wheelbase.		A1A2A3A    A1A2A3A   
G40   Rear suspension - Air, 12,000 lbs. (5,443 kg), 5.3" ride height with shock absorbers
1 - Requires (KUT) Air Compressor Accessory Drive and (JPZ) Suspension air control valve. 		A1A1--    --    A1A1--    --   
GP1   Rear suspension - Air, 13,500 lbs. (6,123 kg), 5.3" ride height with shock absorbers
1 - Requires (KUT) Air Compressor Accessory Drive and (JPZ) Suspension air control valve. 		A1A1--    --    A1A1--    --   
GP8   Rear suspension - Air, 15,500 lbs. (7,031 kg), 5.3" ride height with shock absorbers
1 - Requires (KUT) Air Compressor Accessory Drive and (JPZ) Suspension air control valve. 		A1A1--    --    A1A1--    --   
G68   Shock Absorbers, rear
1 - Required with (FTD) 6,000 lb. front axle. Included with (FTC) 6,250 lb. front axle. Not available with (G40) 12,000 lbs., (GP1) 13,500 lbs. or (GP8) 15,500 lbs. rear air suspension.
2 - Not available with (G40) 12,000 lbs., (GP1) 13,500 lbs. or (GP8) 15,500 lbs. rear air suspension.		A1A2A    A    A1A2A    A   
JPZ   Suspension air control valve, air release valve with switch in cab
1 - Requires (G40) 12, 000lbs., (GP1) 13,500 lbs. or (GP8) 15,500 lbs. rear air suspension.		A1A1--    --    A1A1--    --   
  FTOAxle lubricant, rear, synthetic oil EmGard FE -75W-90S    S    S    S    S    S    S    S   
    Traction controlS    S    S    S    S    S    S    S   
UF3   NEW!  High idle switch
1 - Not available with (PTO) Power Take-off. Requires (PTX) Power Take-Off (PTO) , not installed.		A1A1A1A1A1A1A1A1
  MWAHighway Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1700HS, ratios: 3.10 1ST, 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Highway Series, 19.5K GVW & 26K GCW Max., requires PTX and park pawl. Available with GVWs less than or equal to 19.5K
1 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs.GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Requires (R6G) 26,000 lb GCWR (11,793 kg).		S1S1S1S1S1S1S1S1
  MJ0Highway Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1750HS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Highway Series, 19.5K GVW & 37K GCW Max., requires PTX and park pawl. Available with GVWs less than or equal to 19.5K
1 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs. GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Requires (R6I) 30,000 lbs. GCWR (13,607 kg), (R6W) 34,000 lbs. GCWR (15,422 kg), (R6X) 35,000 lbs. GCWR (15,875 kg) or (R6Y) 37,000 lbs. GCWR (16,782 kg). Requires (R6I) 30,000 lbs. GCWR when ordered with (066) 4.10 rear axle ratio.
2 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs.GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Not available with (066) 4.10 rear axle ratio. Requires (R6I) 30,000 lb GCWR (13,607 kg) or (R6W) 34,000 lbs. GCWR (15,422 kg).		A1A1A2A2A1A1A2A2
  MWBHighway Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A2700HS, ratios: 3.10 1ST,1.80 2ND,1.40 3RD,1.00 4TH,0.70 5TH,0.61 6TH Highway Series, 26K GVW & 26K GCW Max., requires PTX and park pawl, Available with GVWs greater than 19.5K
1 - Requires (GZH) 21,500 lbs. GVWR, (C9U) 22,940 lbs. GVWR or (DD7) 23,500 lbs. GVWR. Requires (R6G) 26,000 lbs. GCWR (11,793 kg).
2 - Requires (DD5) 21,000 lbs. GVWR, (C5D) 22,500 lbs. GVWR or (DB9) 23,000 lbs. GVWR. Requires (R6G) 26,000 lbs. GCWR (11,793 kg).		A1A1A2A2A1A1A2A2
  MBXNEW!  Highway Service Transmission Automatic close-ratio 6 SPD with double overdrive, Allison, A2750HS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Highway Series, 26K GVW & 37K GCW Max., Requires PTX, Includes park pawl. Available with GVWs greater than 19.5K
1 - Requires (GZH) 21,500 lbs. GVWR, (C9U)22,940 lbs. GVWR or (DD7) 23,500 lbs. GVWR and (PTX) Power Take-Off (PTO), not installed and (R6I) 30,000 lbs. GCWR (13,607 kg), (R6W) 34,000 lbs. GCWR (15,422 kg), (R6X) 35,000 lbs. GCWR (15,875 kg) or (R6Y) 37,000 lbs. GCWR (16,782 kg).
2 - Requires (DD5) 21,000 lbs. GVWR, (C5D) 22,500 lbs. GVWR or (DB9) 23,000 lbs. GVWR and (PTX) Power Take-Off (PTO), not installed, and (R6I) 30,000 lbs. GCWR (13,607 kg) or (R6W) 34,000 lbs. GCWR (15,422 kg). 		A1A1A2A2A1A1A2A2
  MIURugged Duty Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1700RDS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Rugged Duty Series, 19.5K GVW & 26K GCW Max., requires PTO and park pawl, On/Off Highway. Available with GVWs less than or equal to 19.5K
1 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Requires (R6G) 26,000 lbs. GCWR (11,793 kg).		A1A1A1A1A1A1A1A1
  MI0Rugged Duty Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1750RDS, ratios 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 Rugged Duty Series, 19.5K GVW & 37K GCW Max., requires PTO and park pawl, On/Off Highway. Available with GVWs less than or equal to 19.5K
1 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs. GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Requires (R6I) 30,000 lbs. GCWR (13,607 kg), (R6W) 34,000 lbs. GCWR (15,422 kg), (R6X) 35,000 lbs. GCWR (15,875 kg) or (R6Y) 37,000 lbs. GCWR (16,782 kg). Requires (R6I) 30,000 lbs. GCWR when ordered with (066) 4.10 rear axle ratio.
2 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs. GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Not available with (066) 4.10 rear axle ratio. Requires (R6I) 30,000 lbs. GCWR (13,607 kg) or (R6W) 34,000 lbs. GCWR (15,422 kg).		A1A1A2A2A1A1A2A2
  MIARugged Duty Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A2700RDS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Rugged Duty Series, 26K GVW & 26K GCW Max., requires PTO and park pawl, On/Off Highway. Available with GVWs greater than 19.5K
1 - Requires (GZH) 21,500 lbs. GVWR, (C9U) 22,940 lbs. GVWR or (DD7) 23,500 lbs. GVWR. Requires (R6G) 26,000 lbs. GCWR (11,793 kg).
2 - Requires (DD5) 21,000 lbs. GVWR, (C5D) 22,500 lbs. GVWR or (DB9) 23,000 lbs. GVWR. Requires (R6G) 26,000 lbs. GCWR (11,793 kg).		A1A1A2A2A1A1A2A2
  MBVNEW!  Rugged Duty Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A2750RDS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Rugged Duty Series, 26K GVW & 37K GCW Max., Requires PTO, Includes park pawl, On/Off Highway. Available with GVWs greater than 19.5K
1 - Requires (GZH) 21,500 lbs. GVWR, (C9U) 22,940 lbs. GVWR or (DD7) 23,500 lbs. GVWR and (PTO) Power Take Off, engine control provisions and (R6I) 30,000 lbs. GCWR (13,607 kg), (R6W) 34,000 lbs. GCWR (15,422 kg), (R6X) 35,000 lbs. GCWR (15,875 kg) or (R6Y) 37,000 lbs. GCWR (16,782 kg).
2 - Requires (DD5) 21,000 lbs., (C5D) 22,500 lbs. GVWR or (DB9) 23,000 lbs. GVWR and (PTO) Power Take Off, engine control provisions and (R6I) 30,000 lbs. GCWR (13,607 kg) or (R6W) 34,000 lbs. GCWR (15,422 kg). 		A1A1A2A2A1A1A2A2
  MH1Emergency Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1700EVS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Emergency Vehicle Series, 19.5K GVW & 26K GCW Max., requires PTO and park pawl. Available with GVWs less than or equal to 19.5K
1 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Requires (YF2) Emergency Service Package and (R6G) 26,000 lbs. GCWR (11,793 kg).		A1A1A1A1A1A1A1A1
  MHVEmergency Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1750EVS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Emergency Vehicle Series, 19.5K GVW & 37K GCW Max., requires PTO and park pawl. Available with GVWs less than or equal to 19.5K
1 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs. GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Requires (YF2) Emergency Service Package and (R6I) 30,000 lbs. GCWR (13,607 kg), (R6W) 34,000 lbs. GCWR (15,422 kg), (R6X) 35,000 lbs. GCWR (15,875 kg) or (R6Y) 37,000 lbs. GCWR (16,782 kg). Requires (R6I) 30,000 lbs. GCWR when ordered with (066) 4.10 rear axle ratio.
2 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs GVWR, (GZJ) 18,000 lbs. GVWR or (GZG) 19,500 lbs. GVWR. Requires (YF2) Emergency Service Package and (R6I) 30,000 lbs. GCWR (13,607 kg) or (R6W) 34,000 lbs. GCWR (15,422 kg).		A1A1A2A2A1A1A2A2
  MG0Emergency Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A2700EVS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH, Emergency Vehicle Series, 26K GVW & 26K GCW Max., requires PTO and park pawl. Available with GVWs greater than 19.5K
1 - Requires (GZH) 21,500 lbs. GVWR, (C9U) 22,940 lbs. GVWR or (DD7) 23,500 lbs. GVWR. Requires (YF2) Emergency Service Package and (R6G) 26,000 lbs. GCWR (11,793 kg).
2 - Requires (DD5) 21,000 lbs. GVWR, (C5D) 22,500 lbs. GVWR or (DB9) 23, 000 lbs. GVWR. Requires (YF2) Emergency Service Package and (R6G) 26,000 lbs. GCWR (11,793 kg).		A1A1A2A2A1A1A2A2
  MBYNEW!  Emergency Service Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A2750EVS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Emergency Vehicle Series, 26K GVW & 37K GCW Max. Close-ratio with double overdrive. Requires PTO and includes park pawl. Available with GVWs greater than 19.5K
1 - Requires (GZH) 21,500 lbs. GVWR, (C9U) 22,940 lbs. GVWR or (DD7) 23,500 lbs. GVWR and (YF2) Emergency Service Package and (PTO) Power Take Off, engine control provisions and (R6I) 30,000 lbs. GCWR (13,607 kg), (R6W) 34,000 lbs. GCWR (15,422 kg), (R6X) 35,000 lbs. GCWR (15,875 kg) or (R6Y) 37,000 lbs. GCWR (16,782 kg).
2 - Requires (DD5) 21,000 lbs. GVWR, (C5D) 22,500 lbs. GVWR or (DB9) 23,000 lbs. GVWR and (YF2) Emergency Service Package and (PTO) Power Take Off, engine control provisions and (R6I) 30,000 lbs. GCWR (13,607 kg) or (R6W) 34,000 lbs. GCWR (15,422 kg).		A1A1A2A2A1A1A2A2
  ME0Motor Home Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1750MH, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Motorhome Series, 22K GVW & 37K GCW Max., requires PTO and park pawl. Available with GVWs less than or equal to 22K
1 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs. GVWR, (GZJ) 18,000 lbs. GVWR, (GZG) 19,500 lbs. GVWR or (GZH) 21,500 lb. GVWR. Requires (PCH) Motorhome Package and (R6I) 30,000 lbs. GCWR (13,607 kg), (R6W) 34,000 lbs. GCWR (15,422 kg), (R6X) 35,000 lbs. GCWR (15,875 kg) or (R6Y) 37,000 lbs. GCWR (16,782 kg). Requires (R6I) 30,000 lbs. GCWR when ordered with (066) 4.10 rear axle ratio.
2 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs GVWR, (GZJ) 18,000 lbs. GVWR, (GZG) 19,500 lbs. GVWR or (DD5) 21,000 lbs. GVWR. Requires (PCH) Motorhome Package and (R6I) 30,000 lbs. GCWR (13,607 kg) or (R6W) 34,000 lbs. GCWR (15,422 kg).		A1A1A2A2A1A1A2A2
  MIXMotor Home Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1700MH, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Motorhome Series, 22K GVW & 26,001 GCW Max., requires PTO and park pawl. Available with GVWs less than or equal to 22K
1 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs GVWR, (GZJ) 18,000 lbs. GVWR, (GZG) 19,500 lbs. GVWR or (GZH) 21,500 lb. GVWR. Requires (PCH) Motorhome Package and (R6G) 26,000 lbs. GCWR (11,793 kg).
2 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs GVWR, (GZJ) 18,000 lbs. GVWR, (GZG) 19,500 lbs. GVWR or (DD5) 21,000 lbs. GVWR. Requires (PCH) Motorhome Package and (R6G) 26,000 lbs. GCWR (11,793 kg). 		A1A1A2A2A1A1A2A2
  MF0Motor Home Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A2700MH, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Motorhome Series, 26K GVW & 26,001K GCW Max., requires PTO and park pawl. Available with GVWs greater than 22K
1 - Requires (PCH) Motorhome Package, (C9U) 22,940 lbs. GVWR or (DD7) 23,500 lbs. GVWR and (PTO) Power Take Off, engine control provisions and (R6G) 26,000 lbs. GCWR (11,793 kg).
2 - Requires (PCH) Motorhome Package, (C5D) 22,500 lbs. GVWR or (DB9) 23,000 lbs. GVWR and (PTO) Power Take Off, engine control provisions and (R6G) 26,000 lbs. GCWR (11,793 kg).		A1A1A2A2A1A1A2A2
  MBWNEW!  Motor Home Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A2750MH, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH Motorhome Series, 26K GVW & 37K GCW Max. Close-ratio with double overdrive. Requires PTO and includes park pawl. Available with GVWs greater than 22k
1 - Requires (C9U) GVWR, 22,940 lbs. (10,405 kg) or (DD7) 23,500 lbs. GVWR and (PCH) Motorhome Package and (PTO) Power Take Off, engine control provisions and (R6I) 30,000 lbs. GCWR (13,607 kg), (R6W) 34,000 lbs. GCWR (15,422 kg), (R6X) 35,000 lbs. GCWR (15,875 kg) or (R6Y) 37,000 lbs. GCWR (16,782 kg).
2 - Requires (C5D) 22,500 lbs. GVWR, or (DB9) 23, 000 lbs. GVWR and (PCH) Motorhome Package and (PTO) Power Take Off, engine control provisions and (R6I) 30,000 lbs. GCWR (13,607 kg) or (R6W) 34,000 lbs. GCWR (15,422 kg). 		A1A1A2A2A1A1A2A2
  MA6NEW!  Non-Conforming School Bus / Shuttle Bus Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A1700PTS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH, 26,001 GCW Max., requires PTX and park pawl. Available with GVWs less than or equal to 19.5K
1 - Requires (C7Y) 14,001 lbs. GVWR, (C5B) 15,000 lbs. GVWR, (C7P) 16,000 lbs. GVWR, (C7R) 16,500 lbs. GVWR, (GZX) 17,500 lbs GVWR, (GZJ) 18,000 lbs. GVWR, (GZG) 19,500 lbs. GVWR. Requires (ANK) Non-Conforming School Bus Package or (ANC) Shuttle Bus Package and (R6G) 26,000 lbs. GCWR (11,793 kg).		A1A1A1A1A1A1A1A1
  MB6NEW!  Non-Conforming School Bus / Shuttle Bus Transmission, Automatic close-ratio 6 SPD with double overdrive, Allison, A2700PTS, ratios: 3.10 1ST 1.80 2ND, 1.40 3RD, 1.00 4TH, 0.70 5TH, 0.61 6TH, 26,001K GCW Max., requires PTX and park pawl. Available with GVWs greater than 19.5K
1 - Requires, (GZH) 21,500 lbs. GVWR, (C9U) 22,940 lbs. GVWR or (DD7) 23,500 lbs. GVWR and (R6G) 26,000 lbs. GCWR (11,793 kg). Requires (ANK) Non-Conforming School Bus Package or (ANC) Shuttle Bus Package.
2 - Requires (C5D) 22,500 lbs. GVWR or (DB9) 23,000 lbs. GVWR, (DD5) 21,000 lbs. and (R6G) 26,000 lbs. GCWR (11,793 kg). Requires (ANK) Non-Conforming School Bus Package or (ANC) Shuttle Bus Package.		A1A1A2A2A1A1A2A2
  KBKTransmission shift control calibration, fuel sense PerformanceS    S    S    S    S    S    S    S   
JL1   Trailer brake controller, integrated
1 - Requires (UY7) Trailering provisions.		A1A1A1A1A1A1A1A1
UY7   Trailering provisions, trailering wire harness only, trailer combined (Stop/Tail/Turn) connection socket and harness mounted at rear of frame.
1 - Requires (JL1) Trailer brake controller.		A1A1A1A1A1A1A1A1
PTX   Power Take-Off (PTO), not installedA    A    A    A    A    A    A    A   
PTO   Power Take Off, engine control provisions, Access is available on left hand and right hand sideA    A    A    A    A    A    A    A   
JG1   NEW!  Prop Shaft Guard, steel
1 - Not available with (NVK) 25 gallon fuel tank or (NSQ) front and rear, 65 gallon total fuel tank.		--    --    A1A1--    --    A1A1
NZZ   Skid Plate, steel, frame-mounted, protects the transfer case from the ground
1 - Not available with (7Y9) heavy-duty triple 2250 cold-cranking amp batteries.		--    --    A1A1--    --    A1A1
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