GMC 23467296 Mirror Assembly, Outside Rear View *Service Primer

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If the mount plate has come off the windshield, you can use adhesive kits available at auto parts stores to resecure it. Follow the instructions included with the kit and make sure to position the flanged part of the mount away from the glass and the narrower part pointing up.

If the mirrors don't operate as expected, you can perform several checks: With the ignition in the ACC position and the engine off, operate the mirror control switch through all functions for both left and right side mirrors. Listen for the sound of the electric motors inside the mirrors. If you hear the motors but the mirror glass doesn't move, there might be a problem with the drive mechanism inside the mirror. In such cases, the defective mirror must be replaced as a unit. If there is no sound coming from the mirrors and they don't operate, first check the fuses. If the fuses are okay, proceed with further diagnosis. Remove the mirror control switch and have its continuity checked by a dealer service department or qualified shop. Check the ground connections. If the mirror still doesn't work, remove the mirror and check the wires at the mirror for voltage. If there's no voltage in each switch position, check the circuit between the mirror and control switch for opens and shorts. If there is voltage, remove the mirror and test it off the vehicle with jumper wires. Replace the mirror if it fails this test.

To access the electrical connectors for the mirrors on 2010 and later Equinox models, you must remove the door panel and door window frame panel.

The electric rearview mirrors in these models use two motors to move the glass—one for up and down adjustments and one for left-right adjustments. The control switch has a selector portion that sends voltage to the left or right side mirror.