Question about Chevrolet Tahoe
Posted on May 11, 2010
Try opening the door with both keys and remote.
Unsure that the liftgate is not lock.Try the unlock procedure from service manual, I quote:
To unlock liftgate from the outside, insert key into the liftgate lock and turn counterclockwise. To lock, turn the key clockwise. All the doors will lock.To open the entire liftgate, use the handle located in the center of the door.You can also use the remote keyless entry transmitter, or the power door locks to unlock and lock the liftgate and liftgate glass.
If the door does not open with this procedure , then the lock is faulty or there is a wiring problem.
In that case lock cylinder must be replaced. If the problem is only on one door, and door does not even open with key, then it is unlikely wiring or eectical problem. Wiring can be tested by reading volts to lock while operating remote.
Check also the liftgate door relay indicated with nr.1 on diagram below.
Here the diagram:
Posted on May 07, 2010
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Posted on Jan 02, 2017
SOURCE: rear gate (barn doors)
Climb into the back of your Yukon, using a apholstery tool (looks like a bent screwdriver with a claw on the end) or a putty knife and pry the bottom of the inner door skins off cut a 6 inch gash in the clear plastic to expose the door handle mechonizims. spray brake cleaner on the inner latch to clean, then using penitration oil to unsieze. Grab the long metal rod and work it up and down...the should open. repeat to the other door if it will not open as well. I had to replace my barn door inner latches on second barn door. (the door that opens last) with safari barn door latches. I got them from a wrecking yard cheap. ($15.00) to replace at GM....over $200.00. The wrecking yard told me the latches wouldn't work, but I look at the Safari latches and they were identical. My barn doors work perfectly. Hopefully this helps.
Posted on Oct 17, 2008
i have not yet corrected the concern but have found the source. in this particular model the fuel door has a safety lock feature that keeps the door from opening when you are fill the fuel. I have found the lever broken on the switch now all i have to do is figure out how to replace it
Posted on Jan 23, 2010
Remove the door card and connector block from the lock and feed a 12v supply to the lock connector. This should allow the solenoid to deactivate the lock.
Posted on Apr 26, 2011
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