GMC Sierra 2500 HD 2023 Owner's Manual page 333

332 Vehicle Care
Fuses Usage
65 Auxiliary underhood
electrical center
66 Cooling fan motor left
67 Active fuel
management 2
68
69 Starter Pinion (LD) /
Starter Motor (HD Gas)
71 Cooling fan
72 Cooling fan right/lower
73 Trailer stop/turn
lamp left
74 Trailer Interface
Module 1
75 DEFC
76 Electric RNG BDS
78 Engine control module
79 Auxiliary battery
80 Cabin cooling pump
81 Trailer stop/turn lamp
right
Fuses Usage
82 Trailer Interface
Module 2
83 FTZM
84 Trailer brake
85 ENG
86 Engine control module
87 Injector B even
88 O2 B sensor
89 O2 A sensor
90 Injector A odd
91 Engine control module
throttle control
92 Cool fan clutch/
Aeroshutter
Relays Usage
5 Headlamp
18 DC/AC inverter
23 Rear window defogger
35 Parking lamp
36 Run/Crank
43
59 A/C clutch
64 Starter Motor (LD &
HD DSL)
70 Starter Pinion (LD) /
Starter Motor (HD Gas)
77 Powertrain