Engine, Vortec 6.0L Variable Valve Timing V8 SFI, E85-compatible, FlexFuel capable of running on unleaded or up to 85% ethanol (360 hp [268.4 kW] at 5400 rpm, 380 lb-ft of torque [515.0 N-m] at 4200 rpm) (Does not include E85 capability with (ZW9) pickup box delete.)
Rear axle, 4.10 ratio (Requires (L96) Vortec 6.0L V8 SFI engine or (LC8) 6.0L V8 SFI Gaseous CNG/LPG capable engine.)
Pickup box
GVWR, 9500 lbs. (4309 kg) (Requires CK25903 model, (L96) Vortec 6.0L V8 SFI engine or (LC8) 6.0L V8 SFI Gaseous CNG/LPG capable engine. Not available with CK25943.)