Four wheel drive
Brake lining wear indicator
Suspension Package (Not available with (X31) Off-Road Package.)
Frame, fully-boxed, hydroformed front section and a fully-boxed stamped rear section
Transfer case, two-speed, electronic shift with push button controls (Requires 4WD models.)
Air filter, heavy-duty
Cooling, auxiliary external transmission oil cooler
Steering, Recirculating Ball with smart flow power steering system
Air filtration monitoring
Trailer brake controller, integrated
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
Cooling, external engine oil cooler
Rear axle, 3.73 ratio (Requires (L8T) 6.6L V8 gas engine.)
Battery, heavy-duty 720 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (L8T) 6.6L V8 gas engine.)
Capless Fuel Fill (Requires (L8T) 6.6L gas V8 engine. Not included with (ZW9) pickup bed delete.)
Alternator, 170 amps (Requires (L8T) 6.6L V8 gas engine.)
Auto-locking rear differential