GMC Sierra Owners Manuals

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Running the Vehicle While Parked
It is better not to park with the engine running. But if you ever have to, here are some things to know. WARNING Idling a vehicle in an enclosed area with poor ventilation is dangerous. Engine exhau ...

Heated Front Seats
WARNING If you cannot feel temperature change or pain to the skin, the seat heater may cause burns even at low temperatures. To reduce the risk of burns, people with such a condition should use c ...

Rear Window Defogger
The rear window defogger uses a warming grid to remove fog from the rear window. (Rear Window Defogger): For vehicles with this feature, press to turn the defogger on or off. It automatically turns ...