On my 2008 acadia the hatch unlocks at random if the doors aren't lock. i don't have the power hatch. It will inlock and pop to the secondary latch and the interior light comes on so i go and

SOURCE: I can't lock the rear hatch door on my yukon

The lock is stuck in the "locked" position.
When you close the hatch, it is jamming the latch hook into the wrong area.

Manually open the hatch. Unlock the hatch (even tho the hatch is already open). there are two bolts holding the metal "loop", the loop has moved. Adjust the metal loop and close the hatch / lock it, etc.

SOURCE: rear hatch will not unlock on my 05 Denali

Check the unlock mechanism for the hatch. These are controlled by an electrical motor pulling a cable. If the cable came loose you might or might not hear the click click that it makes. I would also check the fuses and relays related to the system. Usually if you can get the interior panel off all the innards are exposed. I would suggest pulling that panel off, then triggering the keyless remote and see if anything moves, that might pinpoint where it has gone bad.

SOURCE: 1999 GMC Suburban -- Interior lights & door lock issue

this problem i have repaired many times.. it is normally a broken wire in the flexible rubber tube between the door and the doorjamb from years of flexing back and forth when you open and close the door.. i hope that helps

SOURCE: The door lock/unlock on my

you need to check the battery in the key fob remote . If the battery are good . the remote will need to be tested to make sure it is capable of transmitting (only place i know that can test them is the dealer ship but you could call your local parts store to see if they can test). If the the remote test good then it will have to be reprogramed or relearn to the truck .I belive if it needs to be relearned or programed you will need to have that done at a shop with a proper scan tool .

Larry Spears

• 625 Answers
• Posted on Sep 09, 2012

SOURCE: where are the relays for liftgate on a 2008 Acadia located

There is a relay and a fuse for the power lfitgate. If you have the owners mmanual, you can find the diagram in section 5-100.