Hello-I have an 06 Yukon Denali and the rear door/hatch/gate does not lock. I am told I need to purchase a lock actuator. Any idea where to find one? Thanks, Jon

Manually unlock Trailblazer lift gate hatch Trailblazer SS LS2 Envoy

rear door hatch lock repair GMC Chevrolet - YouTube

? 4:26
https://www.youtube.com/watch?v=QS3PMhGgyAg
Apr 5, 2014 - Uploaded by auto resource
2002 Yukon, rear hatch lock not locking. ... rear door hatch lock repair GMC Chevrolet. auto resource ... chevy tahoe lift gate notopening - Duration: 2:12. ... A Method how to unlock your car in 10 seconds :) - Duration: 0:35.

chevy tahoe lift gate not opening - YouTube

? 2:12
https://www.youtube.com/watch?v=xU6ybiY3F4I
Sep 1, 2010 - Uploaded by 76bluemoon
Back lift gate/glass would not open or release. Even when unlocked with the key fob or the unlock switch on the drivers/passenger door. ... How To Install Replace Rear Lift Gate handle 2002-09 GMC Envoy Chevy Trailblazer ...

chevy tahoe lift gate not opening - YouTube

? 2:12
www.youtube.com/watch?v=xU6ybiY3F4I
Sep 1, 2010 - Uploaded by 76bluemoon Back lift gate/glass would not open or release. ... Wow, are you sure? .... known issue with tahoe, suburbans, hummers and othergmc vehicles. ... 2007-2012 Yukon Denali Rear Door Lock Actuator Replacement ... 2004 GMC Yukon XL rear liftgateremoval - Duration: 50:17. by Velvethamma 5,814 views.

This may have to be done from the inside?

Might need to adjust rear door latch, or could be bad relay or switch. Try pulling/pushing on rear door while closed to see if you can set this off while sitting still.

Check the ground to the actuator, if that is ok replace the actuator.

wiring connections or lock latch frozen --to manually bypass latch or to unlock rear hatch -- in the bottom of door panel is a round access hole remove cover just clipped into place using a flashlight and a screw driver about 3 inches in on bottom is the lock latch and window lock latch connections if u pull back on the inner latch u will unlock the hatch which will allow u to open it[ when opened check the wiring connections for corrosion or damage if good ] now u can remove the whole hatch panel and check the latches and actuator the actuator and latches,and rod clips sometimes need to be lubed or sometimes the clips break or disconnect clips can be purchased at any auto store panel is clipped into place carefully pry from a corner and using a screw driver or panel tool pry straight back till panel clip pops replacement of panel put clips in place and push in panel

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.

have you had someone try the unlock while you listen at the hatch to see if you hear the solenoid working?
My guess is your going to have to remove the rear hatch panel to gain access

how do you removed the interior cover? for the rear door actuator?