2012 GMC Sierra 2500HD Denali

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
Transmission, 6-speed automatic, heavy-duty, electronically controlled with overdrive and tow/haul mode (Requires (L96) Vortec 6.0L V8 SFI engine.)
Trailering equipment, heavy-duty includes trailering hitch platform, 7-wire harness (harness includes wires for: park lamps, backup lamps, right turn, left turn, electric brake lead, battery and ground) with independent fused trailering circuits mated to a 7-way sealed connector and instrument panel jumper wiring harness for electric trailer brake controller
Four wheel drive
Tools, mechanical jack and wheel wrench located in back of cab
Trailer brake controller, integrated
Engine, Vortec 6.0L Variable Valve Timing V8 SFI E85-compatible FlexFuel capable of running on unleaded or up to 85% ethanol (360 hp [268.4 kW] @ 5400 rpm, 380 lb-ft of torque [513.0 N-m] @ 4200 rpm)
Cooling, external engine oil cooler heavy-duty air-to-oil, integral to driver side of radiator tank
Pickup box, Wideside
Suspension, rear 4+1 multi-leaf springs
Steering, power
Suspension Package, Handling/Trailering, heavy-duty includes 35mm twin tube shock absorbers and 36mm front stabilizer bar
Air cleaner, high-capacity
Suspension, front independent, torsion bar
Engine, Vortec 6.0L Variable Valve Timing V8 SFI E85-compatible, FlexFuel capable of running on unleaded or up to 85% ethanol (360 hp [268.4 kW] @ 5400 rpm, 380 lb-ft of torque [513.0 N-m] @ 4200 rpm)
GVWR, 9500 lbs. (4309 kg) (Requires (L96) Vortec 6.0L V8 SFI engine.)
Recovery hooks, front, Black
SAFETY
Automatic Crash Response
OnStar Turn-by-Turn Navigation
Daytime Running Lamps with automatic exterior lamp control
Door locks, rear child security
Rear Vision Camera (Note: images appear on Navigation screen for units equipped with (UYS) AM/FM stereo with MP3 compatible CD/DVD player and navigation. For units not equipped with Navigation systems images will appear within rearview mirror.)
Air bags, seat-mounted side-impact, driver and right-front passenger for thorax and pelvic protection (Always use safety belts and the correct child restraints for your child's age and size, even in vehicles equipped with air bags. Children are safer when properly secured in a rear seat in the appropriate infant, child or booster seat. See the Owner's Manual and child safety seat instructions for more safety information.)
OnStar, 6 months of Directions and Connections plan includes Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance including Remote Ignition Block, Remote Door Unlock (requires power locks), Turn-by-Turn Navigation with Destination Download (requires navigation radio) and OnStar eNav (where available), OnStar Vehicle Diagnostics, Roadside Assistance, Remote Horn and Lights, and Hands Free Calling. (Also includes Stolen Vehicle Slowdown when (LML) or (LGH) Duramax 6.6L Turbo Diesel V8 engine is not ordered. Not available with a ship-to of Puerto Rico or the Virgin Islands. Visit onstar.com for details and system limitations.)
Tire Pressure Monitoring System (does not apply to spare tire)
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control includes electronic trailer sway control and hill start assist
Tire Pressure Monitor System (does not apply to spare tire)
Air bags, frontal, driver and right-front passenger (Always use safety belts and the correct child restraints for your child's age and size, even in vehicles equipped with air bags. Children are safer when properly secured in a rear seat in the appropriate infant, child or booster seat. See the Owner's Manual and child safety seat instructions for more safety information.)
Air bags, head curtain side-impact front and rear outboard seating positions with rollover sensor (Head curtain side air bags are designed to help reduce the risk of head and neck injuries to front and rear seat outboard occupants on the near side of certain side-impact collisions. Always use safety belts and the correct child restraints for your child's age and size, even in vehicles equipped with air bags. Children are safer when properly secured in a rear seat in the appropriate infant, child or booster seat. See the Owner's Manual and child safety seat instructions for more safety information.)
Stolen Vehicle Assistance
OnStar, 6 months of Directions and Connections plan includes Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance including Remote Ignition Block, Remote Door Unlock (requires power locks), Turn-by-Turn Navigation with Destination Download (requires navigation radio) and OnStar eNav (where available), OnStar Vehicle Diagnostics, Roadside Assistance, Remote Horn and Lights, and Hands Free Calling. (Also includes Stolen Vehicle Slowdown when (LML) Duramax 6.6L Turbo Diesel V8 engine is not ordered. Not available with a ship-to of Puerto Rico or the Virgin Islands. Visit onstar.com for details and system limitations.)
Rear Parking Assist, Ultrasonic with audible warning
Air bags, seat-mounted side-impact, driver and right-front passenger for thorax and pelvic protection (Included and only available with (ASF) head curtain side-impact air bags. Always use safety belts and the correct child restraints for your child's age and size, even in vehicles equipped with air bags. Children are safer when properly secured in a rear seat in the appropriate infant, child or booster seat. See the Owner's Manual and child safety seat instructions for more safety information.)