How to Replace Window Regulator 99-04 Oldsmobile Alero
Difficulty: Intermediate · About 75 min · Oldsmobile Alero
Replace a failed power window regulator on a 1999–2004 Oldsmobile Alero while securing the glass and restoring the door water shield.
Tools you will need
- 8mm Wrench
- 10mm Socket
- Ratchet
- Phillips Head Screwdriver
- Putty Knife
Parts and supplies
- Power window regulator
Steps
Disconnect power and remove the door panel
Disconnect the negative battery cable, release the door pull and trim screws, and remove the upper corner trim. Release the panel clips, unplug its connectors, and carefully peel back the water shield without tearing it.
Secure the glass and remove the regulator
Separate the glass from the regulator mounts and tape the glass securely to the frame. Unbolt the regulator and motor brackets, unplug the motor, release the cable retainers, and maneuver the assembly out through the door opening.
Install the replacement regulator
Feed the new regulator into the door and secure its rails and motor brackets. Reconnect the wiring and cable retainers, remove the glass tape, lower the glass onto the regulator mounts, and tighten the glass fasteners to specification.
Reinstall the door panel and test
Reconnect the door wiring, restore the water shield, and press the panel clips into place. Reinstall the screws and trim, reconnect the battery, and test smooth window movement through its full travel.
Check your vehicle’s repair manual for exact specifications and fit.