Backup Lamp Bulb Replacement GMC

1. Push the retaining tab (1) inward and rotate the socket counterclockwise.
2. Remove the socket from the backup lamp housing.
3. Remove the bulb from the socket.

1. Install the bulb into the socket.
2. Index the socket tabs to the backup lamp housing slots.
3. Position the socket to the backup lamp housing.
4. Rotate the socket clockwise until the retaining tab (1) is fully seated.