I have a 2007 GMC Yukon XL. The rear hatch auto-opening feature isn't unlocking/opening like it should. When you depress the switch on the rear hatch handle, the motor(s) activate, but the hatch doesn't release to open automatically. When I attempt to open it manually to assist the opening, it's as if the door isn't unlocking immediately and it takes several seconds for the hatch to release itself to be opened. Any suggestions?

SOURCE: My 95 GMC safari, rear hatch stuck closed on passenger side

You have to crawl in the back remove the panels and find the actuator(s), when you find them check for any linkages the may have fallen off. Gm uses little clips that get brittle and break. if it is a clip reinstall rod with a new clip or reinstal rod and secure with mechanics wire.

If the actuator is broken you can hook up a volt meter to the pin outs and test for power by hitting the door lock unlock button. If there's power then chamces are that the actuator is faulty. if theres no power check ground connections fuses relays and re test. good luck

SOURCE: Yukon xl rear door won't unlock and there is no manual lock.

I fixed mine by using fine steel wool to clean the brass contacts located at the right upper door frame on the right door as viewed from the rear of the vechicle.

SOURCE: 2005 gmc yukon back passenger doors will not

My wife's 2003 Yukon wouldn't lock the rear doors or hatch, but it would unlock. My problem was the lock relay was bad. There are two relays, one for lock and one for unlock. They are located in the fuse panel on the left side of the console. Open the drivers door and you will see a cover that pops off. Behind this are several fuses and relays. Consult your manual to see which is the lock and unlock relays. They are side by side on a 2003. They pull straight out. I replaced both and they were around $10 apiece at any auto store.

SOURCE: 2006 GMC Yukon Denali XL Rear Hatch & Glass locks not working

Could be the latch mechanism for the door is sticking. You could try using some white grease on the latch and the contact where the latch hooks to. You can purchase the grease from most auto parts stores. You will not need to use alot. Just apply a small amount to the mechanisim and then work it in using the manual handle. Then open and close the door several times to feel the "action". Then apply a little more and repeat. This should loosen the latch and get it working again. Also make sure that none of the tension springs have come loose on the latch. And check the seal around the door and make sure it is not pinched and has a proper fit.

Harvey N Tawatao

• 3854 Answers
• Posted on Apr 18, 2010

SOURCE: My GMC 2005 Yukon XL

Here is a link on how to fit your rear hatch issues.

http://gmcowners.com/gmc-forum/showthread.php?t=12619

Thank you for using fixya.