Lift Gate not working

AL514

MECHANIC
4,793 POSTS

If you can locate the module in the rear of the truck for the lift-gate, we can actually see if its commanding power to the lift-gate while you push one of the control buttons, But since it works very temporarily when you unhook the battery, it seems more like a module is not functioning correctly. We can give you instructions on testing the circuits to the lift-gate motor but this will take a lot of time and taking apart some of the tailgate to get to the motor itself. You would have to test for power coming to the motor while commanding it open or closed from one of its switches. It is tough to diagnose because of the amount of data wires(CAN BUS Lines), these are actual computer circuits and send binary code on them. Gets confusing, even for us with the amount of this technology integrated into these newer vehicles.

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Tuesday, October 25th, 2016 AT 3:15 PM

KITCHEN RICK

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3 POSTS

I have a 2013 Cadillac Escalade. The 2 buttons on the lift gate will not open the lift gate glass or the lift gate.

Nor will the lift gate close with the button on the inside of the rear lift gate.

They NOW work from the remote fob and the lift gate also works from the inside headliner switch. BUT only after I disconnected the battery then reconnected it again.

BEFORE I did the battery trick I could not get the lift gate to open at all from anyone of the 3 switches. But I could get the glass to open with the remote fob.

I also found out number 44 fuse has no power to fuse at all even with the key on or truck running. It seems all the other fuses have power to them. And that 15-amp fuse is good.

What should I look for next so I can get the buttons on my lift gate to start working again? And so, my lift gate does not fail to open at all again! This was very difficult to deal with for over 2 weeks till I tried the disconnecting battery trick.

Any help will be greatly appreciated,

Rick

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Saturday, February 5th, 2022 AT 8:55 PM

KITCHEN RICK

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3 POSTS

My vin number is 1GYS4CEF1DR129081
All-wheel drive
Standard length
6.2 V8
Flex fuel

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Saturday, February 5th, 2022 AT 9:01 PM

SQM

MECHANIC
6,383 POSTS

Hello,

Thank you for your question.
Since this is a different vehicle from the original thread, kindly open a new thread.
Simply enter your question by going to this link:

https://www.2carpros.com/questions/new

This will put it in front of all the experts.
Thank you.

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Saturday, February 5th, 2022 AT 9:05 PM

LOWRY89

MEMBER
2 POSTS

Are you sure you didn’t accidentally push the button on your key fob to open the hatch window? If you do and the window is open, which you can’t tell just from looking at it you have to try to lift it, the lift gate will not open up. Took me forever to figure this out.