GMC Sierra/Sierra Denali Owner Manual (GMNA-Localizing-U.S./Canada/
Mexico-11349177) - 2018 - CRC - 10/17/17
Vehicle Care 379
2. Remove the two rear lamp
assembly screws.
3. Pull the rear lamp assembly
outboard away from the box
side until the retainers release.
There will be a noise when the
retainers release. 4. Pull the rear lamp assembly
straight back to remove it from
the vehicle.
5. Turn the bulb socket
counterclockwise.
6. Pull the bulb straight out from
the socket.
7. Replace the bulb, then insert
the bulb socket into the rear
lamp assembly and turn
clockwise. 8. Verify the retainer ring of
attachment stud is pulled away
from lamp. If the retainer ring is
out of position, it will not
engage. Reset the retainer by
pulling it forward with a tool.
9. Push the rear lamp assembly
straight in until it is seated
against the vehicle.
10. Make sure the rear lamp
assembly is flush with the
box side.
11. Reinstall the two rear lamp
assembly screws.
