How to Replace Side Mirror 99-04 Oldsmobile Alero
Difficulty: Intermediate · About 60 min · Oldsmobile Alero
Replace the side mirror on a 1999–2004 Oldsmobile Alero by removing the door panel, transferring the wiring, and testing mirror adjustment before final assembly.
Tools you will need
- 8mm wrench
- 10mm socket
- Ratchet
- Phillips screwdriver
- Flat blade screwdriver
- Trim panel tool
Parts and supplies
- Side view mirror
Steps
Disconnect the battery and remove the door panel
Disconnect the negative battery cable. Remove the door pull and mirror base trim, unplug the speaker, and free the panel clips after removing its fasteners.
Disconnect panel wiring and cables
Lift the panel away and disconnect the latch cables and lock, window, mirror, and trunk switch harnesses. Set the panel aside on a protected surface.
Remove the old mirror
Move the mirror insulation aside and unplug the mirror harness. Support the mirror from outside while removing the three 10mm mounting nuts, then withdraw it.
Install the replacement mirror
Feed the harness through the opening and seat the new mirror on the door. Reinstall the mounting nuts and reconnect the mirror plug, then restore the insulation.
Reinstall the door panel
Reconnect the speaker, switches, and latch cables. Align the panel and engage its clips, reinstall its screws and trim, then reconnect the negative battery cable.
Test mirror and door functions
Test mirror movement and verify all switches, speaker, and latch functions. Confirm the mirror base trim and panel are secure.
Check your vehicle’s repair manual for exact specifications and fit.