Window wiring diagram needed?

HAILEEGRACECRIMI12

MEMBER
2004 GMC YUKON
5.3L
V8
158,000 MILES

I just bought this vehicle and the driver window buttons do not work for anything. Upon opening up the door panel to check it out, I found someone had cut all the wires. Is there a way to know which is window up and down so I can just wire in my own switches? I looked at diagrams online but can't figure them out.

3 Replies

BORIS K

MECHANIC
795 POSTS

Hello,

Looking at the wiring diagram the only direct window control you have from the driver's door switch module is for the driver's window, pin1 and pin 3. All other windows are controlled by the body control module (BCM) via the class 2 serial data bus, brown wire at pin 22, connector C2.
Pin 2, orange wire is 12V supply.

Individual window switches will not work.

Cheers, Boris

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Monday, March 20th, 2023 AT 7:00 AM

HAILEEGRACECRIMI12

MEMBER
19 POSTS

Okay. So, I was out tonight and all of a sudden, the windows and locks started going up and down on their own, so I pulled the switches on my driver door out but not before my window was all the way down and it's going to be 24 degrees tonight. All the other windows still work on their own door controls but all of mine are cut and spliced. Is there any way I can get it up so I'm not freezing?

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Tuesday, March 21st, 2023 AT 9:10 AM

KEN L

MASTER CERTIFIED MECHANIC
47,512 POSTS

Yes, there are two wires coming out of the window motor and going to the switch supply power and ground to these wires and the window will go up, you may have to switch polarity. You have a 50/50 chance of getting it right the first time. It sounds like the driver's door module is out. Here are the remaining wiring diagrams so you can see how the system works and how the two systems are tied together. I also included how to change out the DDM. Check out the images (below). Please let us know what happens.

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