20 Most Recent 2006 GMC Sierra Denali Questions & Answers

You have a bad ground wire. It will be eithr the ground on the trailer or the car harness. To confirm this diagnosis, take a set of jumper cables and hook one end to the trailer tongue and the other end to the car hitch. If your lights work, then you know it is a ground. The other possibilty is that you have a blown fuse.

check your manuals guide book on reprogramming the radio and where would you find the fuse for the radio first check the fuse then reprogram if this information has been helpful please let us know good kuck

U might have to have it re coded at the dealer . My aux input broke on my 2010 Chevy truck my buddy had replaced . He has the same year truck and gave me his old one put it in , didn't work so I called the deal ship and they said it has to re done

it is located at the back of engine on top middle, behind intake. you have to remove sight cover. you will need a special socket

Its your Throttle body going bad.. $400.00 at dealership

Go to a GMC dealer, ask a salesman to get your owners manual out and read you the instructions.
If you can't read them yourself, then reprinting them here makes no sense.

Replace the starter relay under hood in fuse panel and make sure you have a good ground to the battery.

HI there. I am pretty sure that there is no correlation between the a/c not blowing and the emissions light. Does that air only not blow when the a/c is on or does it not blow when the heater is on as well. A main reason that would cause the air to not blow for the a/c is if the fan is not working. A blown fuse, blown relay, bad wiring and mechanical defects in the blower unit would cause failure. As for the emissions light there are litterally dozens of things that would turn that on ranging from bad O2 sensors to clogged EGR. Take the car to an auto parts store light NAPA or Car Quest to have the trouble codes read for free.

Hello: If when yor truck is running it reads 80psi all the time it could mean you have a bad wire or a failed sensor. The sensor is located in the back of the intake manifold which has to be removed to allow access to the sensor to replace it.

How did you jump it? If connected the jumper cable to a bolt stud on the fuse panel, you might have blown the Mega Fuse.

Check for loose wire at starter, try to turn motor with bypass at starter.