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Black plate (38,1)
GMC Sierra Denali Owner Manual (GMNA Localizing-U.S/Canada/Mexico-
7299750) - 2015 - crc - 6/9/14
10-38
Vehicle Care
License Plate Lamp
To replace one of these bulbs:
1. Locate the license plate lamp
under the rear bumper.
2. Turn the bulb socket
counterclockwise and pull it
straight out.
3. Pull the bulb straight out of the
socket.
Replacement Bulbs
Exterior Lamp
Bulb
Number
Back-Up Lamp
921 (W16W)
Back-Up Lamp*
1156
Cargo Lamp
921 (W16W)
Center
High-Mounted
Stoplamp
(CHMSL)
921LL
Fog Lamp
PS24W
Exterior Lamp
Bulb
Number
Front Turn Signal
Lamp and
Parking Lamp
7443 LL
High/Low-Beam
Headlamp
HIR
–
2
(9012 LL)
License
Plate Lamp
W5W LL
Rear
Sidemarker Lamp
194
Stoplamp/Taillamp/
Turn Signal Lamp
7444 LL
Stoplamp/Turn
Signal Lamp/
Taillamp*
1157
* Chassis Cab Models
For replacement bulbs not listed
here, contact your dealer.
Electrical System
Electrical System
Overload
The vehicle has fuses to protect
against an electrical system
overload. Fuses also protect power
devices in the vehicle.
Replace a bad fuse with a new one
of the identical size and rating.
If there is a problem on the road and
a fuse needs to be replaced, there
are some spare fuses and a fuse
puller in the Instrument Panel Fuse
Block. The same amperage fuse
can also be borrowed. Choose
some feature of the vehicle that is
not needed to use and replace it as
soon as possible.