Back-Up Lamps; Replacement Bulbs - GMC 2005 Envoy Owner's Manual

4. Unclip the wiring harness (A) and remove the three
socket retaining screws (B).
5. Remove the socket by releasing the retaining tabs.
6. Holding the socket, pull the bulb to release it
from the socket.
7. Push the new bulb into the socket until it clicks.
8. Reinstall the socket and screws.
9. Reconnect the wiring harness.
10. Reinstall the taillamp assembly and tighten the
screws.
11. Close the liftgate.

Back-Up Lamps

The back-up lamps are located in the rear bumper.
To replace a bulb, do the following:
1. Reach behind the rear bumper and locate the
bulb socket.
2. Turn it counterclockwise to remove from the bulb
assembly.
3. Pull the bulb from the bulb socket.
4. Push in a new bulb into the bulb socket.
5. Reinstall the bulb socket by lining up the tabs in the
lamp assembly and turn it clockwise to secure it.

Replacement Bulbs

Exterior Lamp
Back-up Lamps
Front Sidemarker Lamps
Front Turn Signal Lamps
Halogen Headlamps
High-Beam
Low-Beam
Rear Turn Signal, Stoplamp and
Taillamp
For replacement bulbs not listed here, contact
your dealer.
Bulb Number
3157
194
3457
9005 HB3
9006 HB4
3057
5-47