GM Repair Problems? Ask GM Repair Expert Now.
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
Depending on the model of the vehicle here if a fault code has set with this issue here the fault code will need reset/cleared out then the window checked to see if it can be operated as some fault codes will disable the operation of the window.This needs done with a scan tool that can plug in and communicate with all computers in your model here.If you can tell me the year and model of this vehicle this will help just let me know.
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I am unable to see the other forum or post on this here.Can you post the year,make and model as well as engine size for me?
Is the issue is that you are trying to remove the rear wiper motor itself?
The module is located behind the paneling on the tail gate itself.I know on this model if a fault code sets in the rear door module this can disable the glass from operating as well as any of the door latches at the tail gate until the codes are cleared out with a scan tool that can plug in and communicate with the rear door control module/tail gate module.The scan tool can also be used to operate the window when it will not move with the switches.If you have a procedure on what wire to cut and ground out you can try this but I haven't done this procedure myself before.I can try to look up how this is done if you want just let me know.