2009 GMC Yukon Denali Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2009 GMC Yukon Denali

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2009 GMC Yukon Denali Problems

The Upper Dash May Crack

The upper dash may crack, most commonly on vehicles in warm climates and exposed to a lot of sunlight. The common repair is to replace the upper instrument trim panel. Information on a technical service bulletin or extended warranty is not available at this time.

Reduced Power and Check Engine Light

The GMC Yukon Denali uses a throttle position sensor (TPS) which commonly fails and causes:

This issue is related to the throttle position sensor, and can be caused by faulty wiring to the TPS, bad connection at the TPS, or a failed TPS.

To correct this issue, the wiring harness, connector, and throttle position sensor must be inspected, tested, and/or replaced. The most common cause is a faulty TPS.

"No start" due to anti-theft system failure
The anti-theft system may fail causing a no start condition, the security light may illuminate. Our technicians tell us that the ignition switch may need to be replaced to correct this fault.

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2009 GMC Yukon Denali Reviews

Rated
based on 3 customer reviews
I am the original owner of a 2009 GMC Yukon Denali and absolutely love this SUV!! In fact, this is my second Denali in a row!!! (I was also the original owner of a 2005 Yukon Denali which I obviously loved so much but when the new body style came out I just had to have it! I NEVER had any problems whatsoever with my 2005.) The only issues with my 2009 was the passenger mirror would stay in th...
I have a 2009 Yukon Denali and I love this SUV to DEATH!! I do have a problem with the automatic mirrors when i flip them in, and one of the door handles had to be replaced (that was covered by the warranty). But overall, this thing is my rock!
I have a 2009 GMC Yukon Denali. We love it! It has been acting funny. First we noticed the dash lights flicker occasionally. Now we had 2 occasions where it just would not start. Had to get a jump. Had the battery and alternator checked and they both were good. Any recalls out there? I have the full warranty on the vehicle. Wondering what is wrong?

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