Magnet21

2003 C5. Posted passenger window inop previously. Here is where I am at and looking for advice-
1. Removed passenger inner door panel. It was actually pretty easy.
2. Checked all the wires and found no bare or shorted ones
3. Opened up the DCM and located a black relay located below 3 other relays that will click when either window switch for that door is pressed in either direction.
4. Reached inside the door and felt the motor for the window and it felt quite warm.
5. Scratched head.....

Looks like power is getting to the DCM since that relay clicks but the rest of it is confusing.
Do I need a DCM? A window Motor? Both?
Pointers appreciated.

Thanks!

Magnet21

Will attend to this tonite. Thanks!

Magnet21

OK, was unable to get the digital VM but I do have a trusty test light. Both wires going to the motor (the blue & white and the tan) have juice all the way to the motor. When you push the "auto" button on the window control button, the test light comes on nice and bright and stays on. Auto is the function that lowers the window I think. It will not turn off until you push the other button which is the window "up" control. BTW, the door hinges make a handy ground for test lights and VM's.

If left in the auto position while the wire is connected to the motor, and the ignition is on, the motor will heat up but it doesn't move the window in either direction.

So I am thinking the motor is TU or the regulator is stuck.

foggy

Sounds like you found the problem..
The motor and regulator are all 1 part # assembly..
So just get a new one and you should be gtg

Magnet21

Will post outcome.

Magnet21

Wallet $400 lighter (labor rates in the National Capital Area are very high) but the window works now with it's newly installed GM regulator/motor assembly. The motor had crapped out. Thanks for all the advice folks