GM radios and other electronics are serviced by any electronics repair shop that is authorized by AC Delco. Check your yellow pages for shops and ask them if they authorized.
SOURCE: 2004 GMC Yunkon Denali is misfiring
it could be alot of things...you could start by routine maintnence( new spark plugs, spark plug wires, air filter, oil change, the in line fuel filter) also take into consideration what kind of gas you are using...i know it sucks spending $100 a week in gas with your AWD 6.0 liter V-8...but if ur not running premium it could very well be your problem. I have also heard of the denali's having oxygen sensor issues...is it throwing a check engine code?
SOURCE: CD player won't work
it may have another stuck CD inside. or something else. Especially if there are kids around. I removed 2 CD's from a stereo which had the same problem.
SOURCE: need fuse box diagram 2002 gmc envoy
If I remember correctly if you look at the back side of the fuse cover, it should tell you what the fuses are. Also in the owners manual in the index, under fuses, it should give you a diagram of the fuse location for the acc. outlets. Good luck. The fuse should be a 20 or 25A fuse.
SOURCE: rear seat fuse box in 7 seater 2006 GMC envoy denali
Rear fuse box is under the seat bottom, rear seat (middle row) on the driver's side. There is a plastic cover over the top of it that snaps into place.
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