Removal Procedure
- Ensure that the headlamp switch is in the OFF position.
 
- Open the endgate/liftgate.
 
- Avalanche model shown.
 
- Remove the 2 screws retaining the tail/turn signal lamp assembly to the
body.
 
- Identify the bulb in need of replacement.
 
| •  | The top bulb is a parking lamp and stop lamp | 
 
| •  | The center bulb is a turn indicator lamp | 
 
| •  | The lower bulb is a backup lamp | 
 
- Rotate the bulb socket 1/4 turn counter-clockwise in order to remove
the bulb sockets from the tail/turn lamp assembly.
 
- Remove the bulbs from the sockets by pulling out the bulbs.
 
Installation Procedure
- Install the bulb into the socket.
 
- Install the bulb socket to the tail/turn lamp assembly by rotating the
socket 1/4 turn clockwise.
 
Notice: Refer to Fastener Notice in the Preface section.
- Install the tail/turn signal lamp assembly to the vehicle with the 2 screws.
 
Tighten
Tighten the screws to 1.6 N·m (14 lb in).
- Close the endgate/liftgate.
 
- Inspect the operation.