2012 GMC Sierra Problems and Repair Information
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Most Recent 2012 GMC Sierra Questions
My Gmc 2012 Sierra Has 48000 Miles On It Was Driving Down Street And The Muffler
fell off went to midis muffler broke at place were it cant be repaired there was no hanger in front ...
fell off went to midis muffler broke at place were it cant be repaired there was no hanger in front ...
(Posted by sheets37 8 years ago)
Is There After Market Bumpers For 2012 Gmc 2500hd Sierra
(Posted by shepley67 9 years ago)
2012 Gmc Truck Sierra Troubleshooting Will Not Start Recalls
(Posted by Eugni 10 years ago)
2012 GMC Sierra Videos
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2012 GMC Sierra Denali HD Exterior at 2012 New York International Auto Show
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Popular 2012 GMC Sierra Manual Pages
Owner's Manual - Page 24
... behind the vehicle. See Folding Mirrors on page 2‑15. Park Tilt Mirrors If the vehicle has the memory package, the exterior mirrors tilt to heat the mirrors. Interior Mirror
Adjustment Hold the rearview mirror in the center position when not adjusting either outside mirror. See Trailer-Tow Mirrors on page 2‑16. This feature lets the driver view the curb when parallel...
Owner's Manual - Page 37
...rearview mirror or the navigation screen, if equipped. Rear Vision Camera (RVC)
If available, the RVC displays a view of the tailgate handle, rinse it with water and wipe it with the Integrated Trailer Brake Control (ITBC) system, engine hours, compass zone setting, and compass recalibration. To clean the camera lens, located in the display. Vehicle Customization
Some vehicle features can...
Owner's Manual - Page 49
...3. The vehicle may restrict the use the remote start feature if the vehicle is running. If you to start feature, the RKE transmitter functions will default to four seconds. Insert the new battery, positive side facing down.
See Heated and Ventilated Front Seats on the RKE transmitter if the vehicle has remote start up the vehicle's heating or air conditioning systems and rear...
Owner's Manual - Page 58
2-14
Keys, Doors, and Windows
4. Check the inside mirror or glance over your dealer or a locksmith who can be programmed. Repeat Steps 1 through 4 if additional keys are . The security light will turn it to see your shoulder before changing lanes. Using hood-mounted air deflectors and add-on convex mirror attachments could hit a vehicle on the right. A convex mirror's surface...
Owner's Manual - Page 78
The lights on the heated seat buttons do not turn on automatically during a remote start . Pull forward on page 2‑5. See Remote Vehicle Start on the seat cushion to the seat or the safety belts.
To fold the seat: 1. Rear Seats
Rear Seats (Extended Cab Full Bench)
Folding the Rear Seat
Notice: Folding a rear seat with the seatback. 3. The temperature performance of ...
Owner's Manual - Page 105
... may have any parts of the airbag system. If you add things that could keep the airbag system from working properly? Changing or moving any questions about the vehicle that change about this manual. Seats and Restraints
WARNING (Continued)
proper service procedures, and make sure the person performing work for you modify your vehicle's frame, bumper system, height, front end...
Owner's Manual - Page 152
... FUEL LEVEL LOW message appears.
If the vehicle has a diesel engine, see the hybrid supplement for more or less than the fuel gauge indicated. See Fuel System Messages on page 5‑43 for more information. Fuel Gauge
It takes a little more or less fuel to fill up than half the fuel tank's capacity to empty when the ignition is out of the vehicle the fuel door is on , the fuel...
Owner's Manual - Page 166
...engine oil low can damage the engine. Add oil if required, but if the oil level is within the operating range and the oil pressure is working normally the indicator light then goes off. If the system is still low, have the vehicle serviced. Low Fuel Warning Light
This light, under the fuel gauge, comes on oil and it does not, have some other system problem. The Driver Information Center...
Owner's Manual - Page 177
...'s battery is started and the battery continues to discharge, the climate controls, heated seats, and audio systems will shut off and the vehicle may require a jump start. The messages that action is not started . To reset the engine oil life system, see the Duramax® diesel supplement for more information. It cannot be reset accurately until that do not require immediate...
Owner's Manual - Page 184
... may have been sent at a time. The tire positions must be a problem with the four-wheel-drive system. The low tire pressure warning light will also come on page 10‑58. Make sure the key is in one minute and then restart the vehicle and check for at least one or more information. See your...
Owner's Manual - Page 209
...not come on if the dome override button is removed from the ignition. It then adjusts the voltage for very high electrical loads. EPM works to generate more power whenever needed for best performance and extended life of some accessories. It does this by balancing the generator's output and the vehicle's electrical needs.
Lighting
6-9
Lighting Features
Entry Lighting
The vehicle has...
Owner's Manual - Page 268
...the defog or defrost mode. Air is on to help prevent outside air is selected with floor, defog or defrost modes. An indicator light comes on . The knob can be used with one of the airflow inside the vehicle. Recirculation cannot be positioned between the instrument panel and floor outlets. 8-2
Climate Controls
Air Delivery Mode Control: Turn clockwise or counterclockwise...
Owner's Manual - Page 349
... than the ground. (Continued)
. Notice: If a new fuel cap is inside of cap from the container can be maintained until the filling is not properly installed. Static electricity discharge from your dealer. Contact should be badly burned and the vehicle damaged if this occurs. To help avoid injury to light, and could damage the fuel tank and emissions system.
Do not use...
Owner's Manual - Page 363
... 4WD Extended Cab Standard Box HD Fifth-Wheel Trailer 2500 Series 2WD Crew Cab Long Box HD 6.0L V8 6.0L V8 - Fifth-Wheel Trailer 6.0L V8 6.0L V8 - Conventional Trailer 6.0L V8 - Conventional Trailer 6.0L V8 - Conventional Trailer 6.0L V8 - Fifth-Wheel Trailer 2500 Series 4WD Crew Cab Standard Box HD 6.0L V8 6.0L V8 - Conventional Trailer 6.0L V8 - Driving and Operating
Vehicle 6.0L...
Owner's Manual - Page 364
... kg (20,500 lbs)
2500 Series 4WD Regular Cab Long Box HD 6.0L V8 6.0L V8 - Fifth-Wheel Trailer 2500 Series 4WD Extended Cab Long Box HD 6.0L V8 6.0L V8 - Conventional Trailer 6.0L V8 - Fifth-Wheel Trailer 2500 Series 4WD Crew Cab Long Box HD 6.0L V8 6.0L V8 - Conventional Trailer 6.0L V8 - Conventional Trailer 6.0L V8 - Fifth-Wheel Trailer 3500 Series 2WD Regular Cab Long...
Owner's Manual - Page 368
... capacity. and Canada) on page 13‑4 or Customer Assistance Offices (Mexico) on page 13‑5 for trailering information or advice, or write us at our Customer Assistance Offices. See Customer Assistance Offices (U.S. 9-92
Driving and Operating
Weight of the Trailer Tongue
The tongue load (A) of any cargo carried in it is also part of tongue weight the vehicle can tow. Vehicle options...
Owner's Manual - Page 374
... of the trailer wiring package. Tow/ Haul is equipped with the vehicle as part of the vehicle's Gross Combined Weight Rating (GCWR). Tow/Haul is designed to be installed by your dealer or a qualified service center.
Do not power both ITBC and aftermarket controllers to Trailer Connector Red/Black: Battery Light Blue/White: Brake Switch White: Ground
... Tow/Haul Mode
This indicator...
Owner's Manual - Page 395
... dispose of oil by the vehicle warranty. Wash or properly dispose of water. If you change your skin and could cause engine damage not covered by taking it on whether the oil is needed for the engine at extremely low temperatures. If in the trash or pouring it to Do with Used Oil
Used engine oil contains certain elements that collects used oil stay on...
Owner's Manual - Page 437
... tires can cause a crash. Tire and/or wheel assembly damage can occur when coming into a curb. Overinflated tires are designed for on page 10‑60 for inflation pressure adjustment for High-Speed Operation on road use. See Tire Pressure for high speed driving. 20‐Inch Tires If the vehicle has 20‐inch P275/55R20 size tires, they are...
Owner's Manual - Page 442
...inch) before a tire has built up heat from driving. GAWR FRT: Gross Axle Weight Rating for the rear axle. Light Truck (LT‐Metric) Tire: A tire used on page 9‑16. GVWR: Gross Vehicle Weight Rating. GAWR RR: Gross Axle Weight...See Vehicle Load Limits on a vehicle. Bias Ply Tire: A pneumatic tire in compliance with standard and optional equipment including the maximum capacity of...
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