2004 GMC Yukon Denali Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2004 GMC Yukon Denali
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2004 GMC Yukon Denali ProblemsFront/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.
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.
2004 GMC Yukon Denali QuestionsThere 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.
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
Turn it all the way up on high and 90 and I feel heat coming through the vents but no blowing at all