2012 GMC Sierra 1500 SLE

Rear axle, 3.23 ratio (Refer to Engine/Axle chart for availability.)
Suspension, rear 2-stage multi-leaf springs, semi-elliptic
Rear wheel drive
Suspension, front independent, coil over shock
Suspension Package, Handling/Trailering, heavy-duty includes 46 mm piston monotube shocks and 36mm front stabilizer bar (Includes 36mm front stabilizer bar when (NHT) Max Trailering Pack is ordered.)
GVWR, 6800 lbs. (3084 kg) (Requires TC10753, TC10543 or TK10903 models. Standard on TC10543 models.)
Brakes, 4-wheel antilock, front disc/rear drum
Alternator, 145 amps
Frame, fully-boxed, hydroformed front section
Transmission, 4-speed automatic, electronically controlled with overdrive and tow/haul mode (On Crew Cab models, requires (L20) Vortec 4.8L V8 SFI Flex-Fuel engine. Not available on T*10953 models.)
Engine, Vortec 4.8L Variable Valve Timing V8 SFI FlexFuel capable of running on unleaded or up to 85% ethanol (302 hp [225.2 kW] @ 5600 rpm, 305 lb-ft torque [411.8 N-m] @ 4600 rpm), iron block (Not available on T*10953 models.)
Battery, heavy-duty 600 cold-cranking amps maintenance-free with rundown protection and retained accessory power
SAFETY
Air bags, frontal, driver and right-front passenger with Passenger Sensing System (Always use safety belts and the correct child restraints for your child's age and size. Even in vehicles equipped with air bags and the Passenger Sensing System, children are safer when properly secured in a rear seat in the appropriate infant, child or booster seat. Never place a rear-facing infant restraint in the front seat of any vehicle equipped with an active frontal air bag. See the Owner's Manual and child safety seat instructions for more safety information.)
Daytime Running Lamps with automatic exterior lamp control
Stolen Vehicle Assistance (Deleted when (UE0) OnStar delete is ordered.)
StabiliTrak, stability control system with Proactive Roll Avoidance and traction control, includes electronic trailer sway control and hill start assist
Automatic Crash Response (Deleted when (UE0) OnStar delete is ordered.)
OnStar Turn-by-Turn Navigation (Deleted when (UE0) OnStar delete is ordered.)
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.)
Air bags, seat-mounted side-impact, driver and right-front passenger for thorax and pelvic protection (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.)
OnStar, 6 months of Directions and Connections plan includes Automatic Crash Response, Emergency Services, Crisis Assist, Stolen Vehicle Assistance including Stolen Vehicle Slowdown and 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. (Visit onstar.com for details and system limitations.)
Tire Pressure Monitor System (does not apply to spare tire)