Cooling, auxiliary external transmission oil cooler, heavy-duty air-to-oil
Rear axle, 3.23 ratio
Suspension, Premium Smooth Ride
Exhaust, single system, single-outlet
Automatic Stop/Start (Vehicles built between October, 2021 and December 12, 2021 with a V8 engine, will be forced to have (NSS) Not Equipped with Automatic Stop/Start, which removes Automatic Stop/Start, Engine control stop/start disable button and its content. Beginning with production starting December 13, 2021, (KL9) Automatic Stop/Start will be forced on as standard content. See dealer for details.)
GVWR, 7700 lbs. (3493 kg) (4WD models only and on 2WD models with (LM2) Duramax 3.0L Turbo-Diesel I6 engine.)
Engine, 5.3L EcoTec3 V8 with Dynamic Fuel Management, Direct Injection and Variable Valve Timing, includes aluminum block construction (355 hp [265 kW] @ 5600 rpm, 383 lb-ft of torque [518 Nm] @ 4100 rpm)
Engine control, stop/start system disable button, non-latching (Vehicles built between October, 2021 and December 12, 2021 with a V8 engine, will be forced to have (NSS) Not Equipped with Automatic Stop/Start, which removes Automatic Stop/Start, Engine control stop/start disable button and its content. Beginning with production starting December 13, 2021, (ENL) Engine control stop/start disable button will be forced on as standard content. See dealer for details.)
Brakes, 4-wheel antilock, 4-wheel disc with DURALIFE rotors
Steering, power
Hill start assist
Trailer sway control
Mechanical jack with tools
Electronic Precision Shift
Suspension, front coil-over-shock with stabilizer bar
Suspension, rear multi-link with coil springs
Alternator, 220 amps (Standard with (L84) 5.3L EcoTec3 V8 engine only.)
Differential, mechanical limited-slip
Trailering equipment, heavy-duty includes trailering hitch platform, 7-wire harness with independent fused trailering circuits mated to a 7-way connector and 2" trailering receiver
Transfer case, active, single-speed, electronic Autotrac does not include neutral. Cannot be dinghy towed. (4WD models only. Not available with (NHT) Max Trailering Package.)
Cooling, external engine oil cooler, heavy-duty air-to-oil integral to driver side of radiator (Deleted when (LM2) Duramax 3.0L Turbo-Diesel I6 engine is ordered.)
Battery, 730 cold-cranking amps with 80 amp hour rating (Standard with (L84) 5.3L EcoTec3 V8 engine only.)