Four wheel drive
Steering, Electric Power Steering (EPS) assist, rack-and-pinion
Rear axle, 3.23 ratio
Cooling, external engine oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
Cooling, auxiliary external transmission oil cooler (Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
Advanced Trailering System includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder and trailer electrical diagnostics
Battery, heavy-duty 730 cold-cranking amps/80 Amp-hr, maintenance-free with rundown protection and retained accessory power (Included and only available with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine.)
Differential, heavy-duty locking rear
Transfer case, two-speed electronic Autotrac with rotary dial control (4WD models only)
GVWR, 7100 lbs. (3221 kg) (Requires 4WD Crew Cab models with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine without (NHT) Max Trailering Package.)
Brake lining wear indicator
Frame, fully-boxed, hydroformed front section
Capless Fuel Fill
Trailer brake controller, integrated
Recovery hooks, chrome
Alternator, 170 amps (Included and only available with (L84) 5.3L EcoTec3 V8 engine or (L87) 6.2L EcoTec3 V8 engine. Not available with (LM2) Duramax 3.0L Turbo-Diesel I6 engine or (NHT) Max Trailering Package.)
Durabed, pickup bed
Automatic Stop/Start
Exhaust, dual with polished outlets