Suspension Package, Premium Smooth Ride (1/2 ton models only.)
Engine, Vortec 5.3L V8 SFI FlexFuel with Active Fuel Management capable of running on unleaded or up to 85% ethanol (310 hp [231.1 kW] at 5200 rpm, 335 lb-ft of torque [452.3 N-m] at 4400 rpm), aluminum block (Requires 4WD 1/2 ton models.)
Body, liftgate with liftglass, rear door system with rear-window wiper/washer
Transfer case, active, 2-speed with push-button controls (Requires 4WD models.)