2003 GMC Yukon Denali Repair and Maintenance

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

The speedometer or other instrument panel gauge may begin to work erratically at times. Our technicians tell us that the instrument cluster must be sent to a repair facility to correct this fault. The warranty has been extended on some of these units to 7 years or 70,000 miles.

The rear window defogger may stop working due to a wire terminal broken off of the rear glass. Our technicians tell us that terminal can be reattached using a special glue or silver solder.

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

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I have a 6.0 liter engine and was getting 6-12 mpg in town and 14-28mpg highway. My fuel pump was just replaced and I am now reading 18-27 mpg in town and 6-7 mpg highway. Idle is high and car self propels. I can drive several miles without ever touching the gas pedal and when I made a u-turn ...

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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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