How To Install Replace Window Motor GMC Sierra 99-06 1AAuto.com
Difficulty: Intermediate · About 70 min · Gmc Sierra
Replace the power window motor on a 1999–2006 GMC Sierra, keeping the window supported while separating it from the regulator.
Tools you will need
- Flat Blade Screwdriver
- Number 2 Torx driver
- 7mm Socket
- 10mm Socket
- Painter's Tape
- Door Panel Removal Tool
- Ratchet
Parts and supplies
- Power window motor
Steps
Remove the door panel
Release the lock button and mirror trim, remove the handle trim and panel fasteners, and unplug the door wiring. Lift the panel away from the door, disconnect its handle linkage, and set it aside.
Protect the water shield and support the glass
Remove the switch panel as needed and peel the water shield back without tearing it. Separate the glass clips from the regulator, raise the glass fully, and tape it securely to the door frame.
Remove and replace the motor
Unbolt the regulator and motor assembly, unplug the motor, and guide the assembly out through the opening. Transfer the motor if required, then install the replacement assembly and reconnect the wiring and mounting points.
Test the window and reassemble
Reconnect the switch temporarily and test the motor while the glass remains taped. Reattach the glass to the regulator, remove the tape, and verify smooth travel; then restore the water shield and reinstall the door panel and trim.
Check your vehicle’s repair manual for exact specifications and fit.