Rear doors and hatch will not lock with remote or from inside

rear door hatch lock repair GMC Chevrolet - YouTube

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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 ...

sounds like something may be shorted in your rear hatch switch and when you pushed the button to open it you may have blown a fuse. I would check your fuse and make sure they are all still good. I would also try to look inside the rear hatch and check the wires and see if there is something wrong with one of them.

Since the driver's door gets the most use, and all circuits run through the master switch, check driver's door first and check the wiring at the hinge area for breaks.

Try the Driver Door Module fuse 15A

With regards to the lock bittons on the driver and passenger side its the button themselves aka switch(s) that is your culprit. Why because the remote is getting the motor to open and close them . The only thing that doesn't is the buttons /switches themselves .
Now the rear latch a little different animal. Either the locking mechanism on the door itself is defective or the motor ( the thing you hear clicking) is weak.
This one your gonna need a shop manual for to do the correct testing.But being that te remote will not move it and neither will the manual push button I would lean towards the locking mechanism on the hatch/door its self. Use the shop manual its not that bad of a fix if you have a little patience.

my 06 tahoe just got this problem...all other doors lock and unlock with the fab and door switch...but the hatch is in permanent locked mode. i cant even unlock the hatch window. why is this happening?

First, on the rear hatch, there is an actuator. On FX, when you close the trunk, it kind of **** the hatch closed all the way. When you press lock on the remote, this same actuator locks it as well.
Now,
1) when you unlock the car from the inside, go back there and press the button to open the hatch door manually, do you here any noises?
2) Close all doors, go back close to the hatch button and using the remote , lock the car and then unlock the car. you should hear a sound from the actuator locking and unlocking the lock on the rear hatch!

If you don't hear this, your actuator is inop.
Next step would be to check the fuses inside the car, on the left bottom driver side, and outside on the battery compartment.
It might be just a fuse.
If all fuses check ok, your actuator is most likely gone! Not ea expensive fix, just time consuming!

NOW, if you can hear the noises, then something is either broken inside the actuator or one of the cables is loose!
Hope that helps.
Also, what year and miles on your fx?

Hello Scullen27,

While I vigorously recommend owners wanting to work on their own vehicles should purchase the FACTORY WORKSHOP MANUALS... for one time little jobs there are a FEW good alternatives... that ae also FREE.

BBB Industries maintains an very excellent technical database
for popular USA market vehicles:
TECHNICAL SERVICE BULLETINS
and Circuit wiring diagrams
(registration is required... as these are real documents)

A fuse would seem to be indicated ... if your
control is sound a relay operation... but the
REAR-HATCH is not cooperating... THAT WOULD
be the place to start,

Hope this helps...

FREE drawings
BBB Industries Premium Alternators Starters Power Steering Products

Carnac the Magnificent

you have two relays on the interior fuse block one for locking and one for unlocking. Swap them and see if the problem is now such that they will not lock. If so you have your answer.

you will have to write your vehicles vin number down wich is if you look throught the windshild on the drivers side you will see it its a little plate with numbers but right down the vin number and take you drivers license and Registration with you to the chevy dealer ship and request the remote for that vehicle. and they should be able to get you one. as far as i know the remote is the only way to get the alarm off. I hope this helps you