Specifications include, but are not limited to: Mechanical Exterior Engine, 5.3L EcoTec3 VB with Active Fuel Management, Direct Injection and Variable Valve Timing includes aluminum block construction (355 hp [265 kW] @ 5600 rpm, 383 lb-ft of torque [518 N-m] @ 4100 rpm) (STD) Transmission, 6-speed automatic, electronically controlled with overdrive and tow/haul mode (STD) Suspension Package, Premium Smooth Ride (STD) GVWR, 7300 lbs. (3311 kg) .) Rear axle, 3.08 ratio Max Trailering Package E85 FlexFuel capable Transfer case, active, single-speed, electronic Autotrac with rotary controls Differential, heavy-duty locking rear 4-wheel drive Cooling, external engine oil cooler, heavy-duty air-to-oil integral to driver side of radiator Cooling, auxiliary transmission oil cooler, heavy-duty air-to-oil Battery, 720 cold-cranking amps with 80 amp hour rating Alternator, 150 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 Trailer sway control Suspension, front coil-over-shock with stabilizer bar Suspension, rear multi-link with coil springs Steering, power, electric Hill Start Assist Color, Black Wheels, 18" x 8.5" (45.7 cm x 21.6 cm) aluminum with high-polished finish (STD) Tires, P265/65R18 all-season, blackwall (STD) Tire, spare P265/70R17 all-season, blackwall (STD) Wheel, 17" x 8" (43.2 cm x 20.3 cm) full-size, steel spare Tire carrier, lockable outside spare, winch-type mounted under frame at rear Fascia, front body-color Fascia, rear body-color