Component Testing
WARNING: This page is about a different car, the 2012 Buick Verano. However, it is still accessible from the selected car via links, so may be relevant.
Rear Window Motor
- Ignition OFF, disconnect the harness connector at the appropriate rear M74 window motor.
- Install a 25 A fused jumper wire between one of the control terminals and 12 V. Momentarily install a jumper wire between the other control terminal and ground. Reverse the jumper wires at least two times, the rear M74 window motor should perform the UP and DOWN functions.
- If the function does not perform the UP and DOWN functions
Replace the rear M74 window motor.
- If the function performs the UP and DOWN functions
- If the function does not perform the UP and DOWN functions
- All OK