Two problems related to power train driveline have been reported for the 2004 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 GMC Yukon based on all problems reported for the 2004 Yukon.
GMC Yukon xl denali -traction stability problem registers on dash and car bogs down and will not accelerate if you let up on the accelerator it will seem to improve - took car to mechanic and had wheel sensor replaced did not improve till rust build up was removed from on the splined hub it has since returned - went on line and other people have expressed similar problems but did not find any answers of dealers being able to correct - could be a potential problem which could cause rear end collisions if someone is following to close in the rear since the vehicle nearly comes to a stop.
There was malfunction in the power train driveline, which resulted in the truck shifting from 2wd to 4wd by itself. The dealership has serviced the truck 3 times and replaced the 4wd switch and the transfer case. The problem still exist.