Engine, Duramax 6.6L Turbo-Diesel V8, B20-Diesel compatible 350 hp @ 2700 rpm, 750 lb.-ft. torque @ 1400 rpm
Highway 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 (Requires (C7Y) 14,001 lb. GVWR, (C5B) 15,000 lb. GVWR, (C7P) 16,000 lb. GVWR, (C7R) 16,500 lb. GVWR, (GZX) 17,500 lb. GVWR, (GZJ) 18,000 lb. GVWR or (GZG) 19,500 lb. GVWR. Requires (R6G) 26,000 lb. GCWR (11,793 kg).)
Rear axle, 4.30 ratio Max road speed: 75 MPH
GVWR, 16,500 lb. (7484 kg) (Silverado 4500 HD 4WD models require 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. (3) (FTB) 7.5k front axle and (FTV) 7.5k front suspension and (J27) 15.5k rear axle and one of the following rear suspensions: (91B) 13.5k LiquidSpring prep single volume rear suspension, (91C) 13.5k LiquidSpring prep stacked volume rear suspension, (91D) 15.5k LiquidSpring prep single volume rear suspension or (91E) 15.5k LiquidSpring prep stacked volume rear suspension.)
Wheelbase, 175" (444.5 cm), 60" CA (Requires (F0C) 49" axle to end of frame. Not available with (N12) rear exit exhaust, or (NPK) right side exit exhaust ahead of rear wheels.)
Front axle, 7,500 lb., Dana Spicer 60-256, single-reduction, front driving
Front suspension, 7,500 lb. (3,402 kg) multi-leaf, includes shock absorbers
Rear axle, 11,000 lb. (4,999 kg) Dana Spicer S14-110, single reduction
Rear suspension, 11,000 lb. (4,990 kg) multi-leaf, vari-rate
Emissions, USA 50 State certified
Neutral-at-Stop Automatic transmission shifts to neutral when the service brake is depressed while the vehicle is at a complete stop, and remains in neutral until the service brake is released
Transmission shift control calibration, fuel sense Performance
Batteries, heavy-duty dual 1100 cold-cranking amps includes battery box mounted to left side under cab
Trailering provisions, trailering wire harness only, trailer combined (Stop/Tail/Turn) connection socket and harness mounted at rear of frame.
Trailer brake controller, integrated
Axle to End of Frame, 49" (Requires wheelbase (EM1) 199" or (FNV) 175". Not available with (G40), (GP1) or (GP8) rear air suspension.)
Axle, Open rear axle, non-locking rear
Axle lubricant, front, synthetic oil EmGard FE-75W-90
Axle lubricant, rear, synthetic oil EmGard FE -75W-90
Steering, power (Bosch S2 8014 Plus)
Brakes, hydraulic, heavy duty Bosch/Meritor/Wabco system with 4-channel (ABS) (Includes (J69) driveline park brake.)
Fuel tank, rear only, 40 gallon mounted between frame side rails and behind rear axle
Exhaust system, right side exit, behind rear wheels (Requires (FNV) 175" wheelbase.)