Back hatch won't open

Each door opening has a switch that the door triggers as it opens and closes , one of the switches is faulty or the door is not making contact with the switch , try the rear hatch door switch first . as far as I know they are not computer connected .

Rear hatch is locked or unlocked with a key. (if equipped) • To open the rear hatch, insert the key into the lock, turn it to the unlock position and pull up the rear hatch by pressing the handle (DOOR). You can also lock/unlock the latch (but not release it) with the central door lock system. • If unlocked, the rear hatch can be opened by pressing the handle (DOOR) and pulling the hatch up. • To close the rear hatch, lower and push down the rear hatch firmly. Make sure that the rear hatch is securely latched.

Is it locked

This fix is for 2011 rear manual door.
You may experience some light turns on while driving over a bump or take a sharp turn. Your rear hatch indicator said door is opened.
The courtesy switch is located inside the rear hatch latch assembly. Nothing more but a simple thin lever line leave spring that contacts the ground pole to tell body ECU the door is opened.
The spring is so thin that it bent out of shape overtime therefore when you close the door it doesn't get pushed away from the ground pole far enough caused intermittently false door open alarm.
ALl you have to do is to remove the door latch assembly. Separate the actuator from the latch. Look into the latch you would see a copper like spring one end rests onto the ground pole. Jam your screw driver between the latch housing and spring lightly pride it away from the pole to unbend it. . Manually close the latch and look to see if it gets pushed away from the pole. If it doesn't try to unbend it again.
If you have or know how to use a ohm meter than check for continuity between spring and it housing. You should get 0.3-1.0. Ohm when the latch is open and no continuity when you closed the latch.
Any question shoot me a email constant12vdc@yahoo
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My 2007 Yukon back hatch opens half way then stops and closes again. Any suggestions what the problem could be?

can you hear the latch release when you try to open? if no clicking noise is heard then most likely a bad latch assembly. also check the rear door control module to see if smells burnt, if it does it won't send open signal. the module is located behind the plastic shroud on the left of the rear hatch.

The inner hatch latch mechanism is seized. You need to pull the door panel with it closed. It will be tight but it will come off without cracking. Spray lube around inside of latch. Get a long screw driver and pry the link from the key. The latch won't release until the key link goes to the unlock position. It will be seized. It is easy to figure which way to move it if you have someone insert the key into the closed hatch and try to move it.

Heard there was a recall on the rear hatch-

Here is what I have had success doing. Open the rear door, put a little grease on shock's inner rod, close the rear door to lubricate the shock internally. It may require a little more lubrication if it does not work the first time.

The handle that broke had a little 'finger' that actuated the release mechanism. The only way to open the back hatch is to remove the inner panel and push on the release mechanism.

Once off, you can either a) buy a replacement handle (expensive) or b) do what I did and simply make a piece of L-shaped metal to lever the release mechanism from the outside.

If your handle is completely off of the door you can look up under the little plastic cover (that hides the handle) and see the slot on the right side that the release handle inserts into. You need to stick the lever into that slot, and angle it down about 30 degrees from horizontal to get under the latch mechanism, which unlocks the hatch if you pry it upwards.