GMC Sierra/Sierra Denali 2500 HD/3500 HD Owner Manual (GMNA-
Localizing-U.S./Canada/Mexico-14632286) - 2021 - CRC - 11/19/20
Vehicle Care
341
Back
The vehicle may not be equipped with all of
the fuses, relays, and features shown.
Fuses
Usage
F1
Right doors
F2
Left doors
F3
Universal garage door
opener
F4
–
F5
–
F6
Front blower
F8
Lumbar switch
F10
Body control module 6/
Body control module 7
F11
Seat/Column lock module
F12
Body control module 3/
Body control module 5
F14
Mirrors/Windows module
F17
Steering wheel controls
F18
Video processing module/
Obstacle detection
F19
DLIS
F20
Ventilated seats
F21
NOT R/C
F22
Heated steering wheel
Fuses
Usage
F23
MISC R/C
F24
Instrument panel cluster
ignition/Overhead
F25
Heating, ventilation, and
air conditioning ignition/
Heating, ventilation, and
air conditioning auxiliary
F26
USB ports/Special
equipment option retained
accessory power
F27
Accessory power outlet/
retained accessory power
F28
Accessory power outlet/
Battery
F30
Sensing and diagnostic
module/Parking brake
F31
Body control module 4
F32
Special equipment option/
Data link connection
F33
Body control module 8
F34
Cargo lamp
F40
CGM
F41
Infotainment 1