2004 GMC Yukon Denali Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 GMC Yukon Denali

2004 GMC Yukon Denali Problems

Front/Rear Differential May Develop Noise Due to Worn Bearings

The front or rear differential may develop an abnormal noise due to worn bearings or another internal fault. Our technicians tell us that a complete overhaul of the affected differential is commonly necessary to correct this condition.

Inactive-Merged-Heating and AC Temperature and Air Delivery Mode Door Actuators May Fail

One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

"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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2004 GMC Yukon Denali Questions

There is a loud clanging underneath the car. What could that be? (1 answer)

It sounds like aluminum cans in a larger can banging around. Even when the car is idling the noise persists. It is not usually there when you first start the car.

Heater not blowing (1 answer)

As of this morning the heater isn't blowing. Yesterday I drove for 20 minutes before it decided to come on. And that was after allowing it to warm up for 10-15 minutes. But today it didn't blow at all. Should I still try to wiggle the wire or does this sound like something else

Why when I turn my heat on it won't blow? (1 answer)

Turn it all the way up on high and 90 and I feel heat coming through the vents but no blowing at all

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2004 GMC Yukon Denali Reviews

Dear Hempsted NY. You and I must have the exact same Denali. Every problem you listed is identical to the problems I am having. I thought for years, my truck was rock solid. My radio blacks out then recovers on its own. My right front tires wear strangely and my brakes were recently changed, pads and rotors now, I don't trust my brakes....waaay too spongy for my liking. I guess thats GMC tel...
my vehicle is in good shape but it have been given me the next list of problems 1 the right front wheel is worn, and i have seen many denali's whit that problem 2 the trany started shifting on his own 3 after the first time i changed the brakes it haven't been the pedal is always spongy the only time it get's hard is when i take it to the car wash after a couple of days it ...
I bought mine used w/about 99,000 miles on it. It has never left me stranded or not started, etc. But i've had it nearly 8mos now and have only put about 5,000 miles on it (i also have a 2008 sebring i bought new, that has 52,000 on it already) i do a lot of driving. This Yukon has been in the shop more than on the road! Some of the denali trim is peeling off on the rear and the front quar...

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