Engines

Trim Level Horsepower Torque
(lb-ft.)
SLE SLT
Vortec 5.3L V8 SFI FlexFuel with Active Fuel Management, capable of running on unleaded or up to 85% ethanol (with gas - 320 hp [238.6 kW] @ 5400 rpm, 335 lb-ft of torque [452.2 N-m] @ 4000 rpm, with E85 ethanol - 326 hp [243.1 kW] @ 5300 rpm, 348 lb-ft of torque [469.8 N-m] @ 4400 rpm), iron block Standard Standard 320 335
Vortec 6.0L Variable Valve Timing V8 SFI, (352 hp [262.5 kW] @ 5400 rpm, 382 lb-ft of torque [515.7 N-m] @ 4200 rpm) Standard Standard 352 382
Vortec 6.2L V8 SFI E85-compatible, FlexFuel, capable of running on unleaded or up to 85% ethanol (395 hp [295 kW] @ 5600 rpm, 417 lb-ft of torque [565 N-m] @ 4300 rpm) Not Available Available 395 417

Mechanical

  SLE SLT
Air cleaner, high-capacity Available Available
Alternator, 160 amps, 1/2 ton models only Standard Standard
Alternator, 145 amps, 3/4 ton models only Standard Standard
Cooling, external engine oil cooler, heavy-duty air-to-oil, integral to driver-side of radiator, high capacity cooling fans Available Available
Cooling, auxiliary external transmission oil cooler, heavy-duty air-to-oil Available Available
Differential, heavy duty locking rear Standard Standard
Engine block heater Available Available
Exhaust, aluminized stainless-steel muffler and tailpipe Standard Standard
Snow Plow Prep Package, includes instrument panel switch, roof beacon wiring, forward lamp wiring and torsion bar Available Available
StabiliTrak, stability control system with traction control Standard Standard
Steering, power Standard Standard
Trailering equipment, heavy duty, includes trailer hitch platform, 7-wire harness with independent fused trailering circuits mated to a 7-way sealed connector and 2" trailering receiver Standard Standard
Transfer case, active, single-speed, electronic Autotrac with rotary controls. Standard Standard
Transfer case, active, 2-speed with push-button controls (4WD models only) Available Available
Transmission, 6-speed automatic, heavy-duty, electronically controlled with overdrive and tow/haul mode, tap up/tap down shifting (Requires 1/2 ton models) Standard Standard
Transmission, 6-speed automatic, heavy-duty, electronically controlled with overdrive and tow/haul mode (Requires 3/4 ton models) Standard Standard

Transmission

Features  SLE SLT
Rear axle, 3.08 ratio Standard Standard
Rear axle, 3.42 ratio Available Available
Rear axle, 3.73 ratio Standard Standard
Transmission, 6-speed automatic, heavy-duty, electronically controlled with overdrive and tow/haul mode, tap up/tap down shifting; 1/2-ton models only Standard Standard
Transmission, 6-speed automatic, heavy-duty, electronically controlled with overdrive and tow/haul mode; 3/4-ton models only Standard Standard

Steering

Turning Diameter  2WD 1/2-TON 4WD 1/2-TON 2WD 3/4-TON 4WD 3/4-TON
Turning diameter, curb-to-curb, ft 43 43 45.3 45.3
Features  SLE SLT
Differential, locking, heavy duty, rear Standard Standard
Skid Plate Package, includes front underbody shield starting behind front bumper and running to first cross-member, protecting front underbody, oil pan, differential case and transfer case, frame-mounted shields Available Available
Snow Plow Prep Package, includes instrument panel switch, roof beacon wiring, forward lamp wiring and torsion bar Available Available
Steering, power Standard Standard
Suspension, front, coil-over-shock with stabilizer bar (1/2-ton models only) Standard Standard
Suspension, rear, multilink with coil springs (1/2-ton models only) Standard Standard
Suspension, front, independent with torsion bars (3/4-ton models only) Standard Standard
Suspension, rear, multistage leaf springs (3/4-ton models only) Standard Standard
Suspension Package, Premium Smooth Ride (1/2-ton models only) Standard Standard
Suspension Package, Handling/Trailering, Heavy Duty (3/4-ton models only) Standard Standard
Suspension Package, Autoride, bi-state variable shock dampening and rear air-assisted load-leveling, includes automatic air level control Not Available Available
Suspension Package, Off-Road, includes (NZZ) Skid Plate Package, (QJP) P265/70R17 on-/off-road, blackwall tires, (NQH) 2-speed electronic transfer case and (K47) high-capacity air cleaner. Available Available

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