Black plate (44,1)
GMC Sierra Owner Manual - 2011
10-44
Vehicle Care
5. Install the bulb socket into the
lamp asembly by turning it
one quarter turn clockwise.
6. Reinstall the lamp assembly and
tighten the screws.
License Plate Lamp
To replace one of these bulbs:
1. Reach under the rear bumper for
the bulb socket.
2. Turn the bulb socket
counterclockwise and pull the
bulb socket out of the connector.
3. Pull the old bulb straight out
from the bulb socket.
4. Install the new bulb.
5. Reverse Steps 1 and 2 to
reinstall the bulb socket.
Replacement Bulbs
Exterior Lamp
Bulb
Number
Back-up Lamp
3047 or 921
Back-up Lamp*
1156
Cargo Lamp and
Center
High-Mounted
Stoplamp
(CHMSL)
912
Fender Marker
168
High-Beam
Headlamp
9005
Low-Beam
Headlamp
H11
License
Plate Lamp
168
Exterior Lamp
Bulb
Number
Stoplamp/Taillamp/
Turn Signal Lamp
3047K
Sidemarker Lamp
194
Stoplamp/Turn
Signal Lamp/
Taillamp*
1157
* Chassis Cab Models
For replacement bulbs not listed
here, contact your dealer.