GMC Sierra Owners Manual

Taillamps (Chassis Cab Models)
Vehicle Care / Bulb Replacement / Taillamps (Chassis Cab Models)

GMS Sierra: Taillamps (Chassis Cab Models). A. Backup Lamp
A. Backup Lamp
B. Stoplamp/Taillamp/Turn Signal Lamp

To replace one of these bulbs:

1. Remove the four screws.

2. Lift the lens off the lamp assembly.

3. Turn the old bulb counterclockwise and pull the it straight out from the socket.

4. Install a new bulb into the socket, turn it clockwise, and press it in until it is tight.

5. Reinstall the lens and the four screws.


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