Three problems related to wiring have been reported for the 2008 GMC Yukon. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 GMC Yukon based on all problems reported for the 2008 Yukon.
Drivers door lock failure. According to the auto forums on the internert, this is a widespread failure, for all doors, not just the drivers. Its an electrical wiring problem with the lock actuator. Gm refuses to fix them out of warranty and has issued no recall. I read a woman's post where her toddler child almost fell out of the back seat while moving because the door failed to lock, seat belt was the only reason child survived. Gm should be ashamed for not recalling this hazard.
Door locks have failed on 3 out of 4 of the doors. Sometimes in the locked position, sometimes in the unlocked position. Some postings on this topic are referencing issues with wiring harness. If the locks were to not unlock in an car accident, or god forbid rolling over down a hill that there is the potential for loss of life. There are multiple complaints regarding this on the internet. Gm is well aware of these failures. I really believe this should fall into the recall catagory of vehicles.
First owner of a 2009 GMC Yukon has had 3 door lock failures, which not only qualifies under the lemon law, but also poses a major safety issue. The first door lock failed. GMC does not consider door locks as a warranty item or safety item so I was forced to pay for a replacement. The next week, another door lock failed. The dealer did not charge for the replacement. Now, a third door lock failed only 10 days after the last repair. Why is this a safety concern? my child was able to open the door while all doors were locked. Due to e failure, the door was unlocked unknowingly. My child and any child or person risks falling out of a moving vehicle. Secondly, should a car accident occur, unlocked doors could result in a door opening and ejecting the passenger leading to death. There is a flood of complaints on the web for this issue. GMC has not owned up to it, but due to the major safety issues, this should be investigated and faulty actuators and the known pattern failure in wiring harness causing the failures should be addressed as an immediate recall.