2003 GMC Yukon Denali Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2003 GMC Yukon Denali

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2003 GMC Yukon Denali Problems

"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.
Instrument Panel Lights Flickering and Exterior Lights Intermittent

The headlight switch used on the GMC Yukon Denali is known to fail through normal operation. Since the headlight switch is also integrated into the interior lights, a malfunctioning switch can cause issues with interior lights as well.

  • Symptoms of a failed headlight switch include:
  • Headlights and taillights failing to turn on or off
  • Interior lights flicker, or fail to turn on or off
  • Gauge cluster lighting off or flickering with headlights on
  • Parking light malfunctions  

This issue is well known with General Motors Trucks and SUVs, and is solved by testing and, if needed, replacing the headlight/dimmer switch. Bad grounding wires at the tail-lights, and dirty/corroded tow package wires can also lead to some of these issues. 

Check Engine Light Due to Gas Cap Issue

A Loose or worn gas cap may cause Check Engine Light to illuminate.

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2003 GMC Yukon Denali Questions

How much $ should I expect to pay for a transfer case or differential issue? (1 answer)

After spending $650 on new front bearings, my truck now has either a transfer case issue or a differential bearing issue. I am a bit scared as to what this is going to cost me. Any input?

The window in my rear access won't latch. (2 answers)

what does it mean when it reads "service ride control" (1 answer)

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2003 GMC Yukon Denali Reviews

Rated
based on 4 customer reviews
Iam very happy with my Yukon-Denali 2003, have 110330 miles, Nilo Barredo Sr.
I bought this car as a GM demonstrator in Spring 2004. It now has 110,000 miles on it. Like people things start to go as one matures. The latest was a "cluster problem"---the speedo "flat lined". Apparently there was a notice sent out a few years ago about the problem. But GM would repair vehicles with less than 70,000 miles. As a result, I just forked over $600+. to repair the "cluster ...
My wife and I bought a brand new 2003 GMC Yukon Denali and have been very happy with it. I have had a rattle in the muffler and now I need to replace the water pump, not bad for a 7 years.

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