Engine, 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
Rear axle, 3.08 ratio (Not available with (K5L) Heavy-Duty Trailering Package.)
Suspension Package, Premium Smooth Ride
GVWR, 7300 lbs. (3311 kg) (Standard on 4WD models.)
Transfer case, active, single-speed, electronic Autotrac with rotary controls, does not include neutral. Cannot be dinghy towed. (Requires (GU4) 3.08 rear axle ratio. Not available on 2WD models or with (K5L) heavy-duty trailering package.)
Battery, 660 cold cranking amps with 80 amp hour rating
Alternator, 160 amps
Trailering equipment includes trailering hitch platform, 7-wire harness with independent fused trailering circuits mated to a 7-way sealed connector and 2" trailering receiver
Suspension, front coil-over-shock with stabilizer bar
Suspension, rear multi-link with coil springs
Steering, power
Powertrain grade braking
Wheel, 17" (43.2 cm) full-size, steel spare