The front 12 volt power socket for the lighter stays "hot" when the key is off.
Buy a lighter from Canadian tire that will fit your car and puch the lighter in the outlet it should now work
it is located under the dash behind the knee bolster to the left of the cigarette lighter.
Check the battery cables. Make sure they are not loose.
It means one of the lights is burnt out or loose and is not working. Turn on the turn signals and get out of the car and see which bulb is not working. Replace that bulb.
easy try a junk yard or buy a new lighter --check the fuse
lighter an radio fuse
One can purchase a used GMC car from a variety of sources. One can go to a GMC dealership, a general used car dealership, or use sites such as AutoTrader.
It could be as simple as the brakelight switch. www.trailvoy.com All the answers for your Envoy and Trailblazer
That's just how the car is. My old 2005 GMC Sierra would do the same thing. I would turn the key off, and the radio would stay on, you just have to open the door to turn everything off, correct?
At a car dealership (Honda, Toyota, GMC, etc.).
At a car dealership (Honda, Toyota, GMC, etc.).
In the 2012 GMC 3500, the fuse for the cigarette lighter is typically located in the fuse box under the dashboard. It is usually labeled as "CIG" or "Lighter." To confirm the exact location and specifications, it's best to refer to the owner's manual for the vehicle, as fuse arrangements can vary by model and configuration.