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Chevrolet Silverado 2500 HD/3500 HD Owner Manual (GMNA-Localizing-U.
S./Canada/Mexico-14632154) - 2021 - CRC - 11/20/20
332
Vehicle Care
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
Instrument Panel Fuse Block (Left)
The left instrument panel fuse block access
door is on the driver side edge of the
instrument panel.
The vehicle may not be equipped with all of
the fuses, relays, and features shown.
Pull off the cover to access the fuse block.
A fuse puller is available in the left
instrument panel end cap.