This GMC Sierra 2500HD boasts a Turbocharged Diesel V8 6.6L/403 engine powering this Automatic transmission. ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-DIESEL COMPATIBLE, Wireless Charging (Not compatible with all phones. Compliant batteries include QI and PMA technologies. Reference Mobile devices manual to confirm what type of battery it uses.), Windows, power with driver express up and down and express down on all other windows (Standard on Crew Cab and Double Cab. On Regular Cab, included and only available with (PDD) Sierra Convenience Package.) (Standard on Crew Cab and Double Cab. On Regular Cab, included and only available with (PDD) Sierra Convenience Package (Double Cab and Regular Cab).). This GMC Sierra 2500HD Comes Equipped with These Options Wheelhouse liners, rear, Wheel, 18' x 8' (45.7 cm x 20.3 cm) full-size, steel spare, Visors, driver and front passenger illuminated vanity mirrors, Underbody Shield, frame-mounted shields includes front underbody shield starting behind front bumper and running to first cross-member, protecting front underbody, oil pan, differential case and transfer case, Transmission, 6-speed automatic, heavy-duty, electronically controlled with overdrive and tow/haul mode. Includes Cruise Grade Braking and Powertrain Grade Braking (Requires (L96) Vortec 6.0L V8 SFI engine or (LC8) 6.0L V8 SFI Gaseous CNG/LPG capable engine.), Transfer case, electronic shift with rotary dial controls (Requires 4WD models.), Trailering equipment Trailering hitch platform 2.5' with a 2.0' insert for HD, 7-wire harness with independent fused trailering circuits mated to a 7-way sealed connector to hook up parking lamps, backup lamps, right and left turn signals, an electric brake lead, battery and a ground, The trailer connector also includes the 4-way for use on trailers without brakes - park, brake/turn lamps, Trailer brake controller, integrated, Tires, LT265/60R20E all-terrain, blackwall, Tire Pressure Monitoring System (does not apply to spare t