How to Replace Mirror 10-14 GMC Terrain

Difficulty: Intermediate · About 35 min · Gmc Terrain

Replace the side mirror on a 2010–2014 GMC Terrain by removing the front door panel to reach the mirror connector and retaining nuts.

Steps

1. Remove the door panel

   Switch off the ignition and pry off the access covers behind the handle and below the pull. Remove the exposed fasteners, release the panel clips, and lift the panel away from the window ledge.

2. Disconnect the door controls

   Release the door-handle cable from its clip and unplug the switch-panel harnesses. Support the panel so no wiring or cable remains under tension.

3. Remove and replace the mirror

   Remove the inner mirror cover and unplug the mirror harness. Support the mirror from outside while removing its three nuts, then feed the replacement wiring through the opening and secure the unit.

4. Reassemble the door

   Reconnect and retain the mirror harness, then reconnect the switch plugs and door-handle cable. Align the panel clips and press them home before reinstalling fasteners and access covers.

5. Verify function

   Test mirror movement and any equipped heating feature. Confirm the door handle, switches, and panel retainers all work before closing the door.

Check your vehicle’s repair manual for exact specifications and fit.