GMC Sierra Owner's Manual page 342

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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
Vehicle Care
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
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