Chevy Tahoe door locks

kambos

just purchased my 2005 tahoe and ive read all the posts concerning the doorlock actuators but who can tell me why both rear doors and the liftgate will lock but not unlock?, cant open the rear hatch because there is no key hole on the hatch button

Mr_Shiftright

Hmmm...you're going to have to track that down with a wiring diagram and multimeter...if I had to take a guess I'd bet on the relay that works with this system--but it's really just a guess at this point.