GMC 2011 Sierra - Manual (Page 469)

Black plate (45,1) GMC Sierra Owner Manual - 2011
Vehicle Care 10-45
A. Sidemarker Lamp
B. Low Beam Headlamp
C. High Beam Headlamp
D. Turn Signal Lamp/
Parking Lamp
4. Turn the bulb socket
counterclockwise to remove it
from the headlamp assembly
and pull it straight out.
5. Unplug the electrical connector
from the old bulb by releasing
the clips on the bulb socket.
6. Replace it with a new bulb
socket.
7. Plug in the electrical connector
to the new bulb socket.
8. Reinstall the new bulb socket
into the headlamp assembly and
turn it clockwise to secure.
Pick-Up Box Identification
and Fender Marker
Lamps
The pick-up box identification lamps
are LEDs. For replacement of the
LED lighting assembly contact your
dealer.
To replace a pickup box fender
marker lamp bulb:
1. Press the tab from the back to
remove the lamp.
2. Turn the bulb socket
counterclockwise to remove
from the lamp assembly.
3. Gently pry the bulb from the
socket.
4. Install the new bulb in socket.
5. Reinstall socket into lamp
assembly.
6. Reinstall the lamp assembly.