Back-Up Lamps - GMC 2009 Envoy Denali Owner's Manual

4. Unclip the wiring harness (A) and remove the three
socket retaining screws (B).
5. Remove the socket plate.
6. Holding the socket, pull the bulb to straight out
release it from the socket.
7. Push the new bulb into the socket until it clicks.
8. Reinstall the socket plate and three screws.
9. Reconnect the wiring harness.
10. Reinstall the taillamp assembly by lining up the
locator pins with the retainers in the body of the
vehicle.
11. Reinstall the two screws.
5-48

Back-Up Lamps

The back-up lamps are located in the rear bumper.
To replace a bulb:
1. Reach behind the rear bumper and locate the bulb
socket.
2. Turn it counterclockwise to remove from the lamp
assembly.
3. Holding the socket, pull the old bulb to release it
from the socket.
4. Push in a new bulb into the bulb socket until it
clicks.
5. Reinstall the bulb socket into the lamp assembly
and turn it clockwise to secure.