Two problems related to power door locks not working have been reported for the 2008 Chevrolet Tahoe. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Chevrolet Tahoe based on all problems reported for the 2008 Tahoe.
The locking mechanism on my chevy Tahoe 2008 ltz no longer works on the passenger side door. The electronic lock/unlock door mechanism no longer locks or unlocks the passenger door as well as the key remote no longer locks or unlocks the front passenger door. It sounds like from reading the other numerous complaints regarding this issue I can expect the rest of the door locks to quit operating at some point. This is obviously a real safety concern.
Drivers door and back hatch will bounce back open and not catch and then the door lock will not unlock to open the door by remote, door panel lock or by hand trapping person in the vehicle. Spoke to gm, they know this is an issue but unwilling at this time to put out a bulletin or recall.