Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
66 Vehicle Care
The vehicle may not be equipped with all of
the fuses, relays, and features shown.Fuses Usage
F1 Traction control module power
F2 Engine control module power
F3 Air conditioning clutch
F4 NOx sensors/Exhaust particulate sensors
F5 Engine control module/ Integrated chassis control
module/Water in fuel
sensor
F6 Front wipers F7 Cargo lamp/Bed lighting
F8 Engine control module miscellaneous
F9 Engine control module
F10 Engine control mod- ule-injectors
F11 Mass airflow sensor
F12 Starter
F13 Traction control module Fuses
Usage
F14 –
F15 –
F16 –
F17 Front axle actuator
F18 –
F19 –
F20 Fuel pump F21 Front blower
F22 Antilock brake system valves
F23 –
F24 Trailer F25 Transfer case electronic control
F26 Antilock brake system pump
F27 Trailer brake control module
F28 Rear window defogger
F29 –
F30 Driver heated seat Fuses
Usage
F31 –
F32 Passenger heated seat
F33 Body control module 3
F34 Integrated chassis control module
F35 –
F36 Center high-mounted stoplamp
F37 Right high-beam headlamp
F38 Left high-beam headlamp
F39 Rear differential lock actuators
F40 Front differential lock actuators/Selective catalytic
reduction power module
wake up
F41 Glow plug module
F42 –
F43 –
F44 Fuel heater F45 Selective catalytic reduction power module heater
Chevrolet/GMC 2.8L Duramax Diesel Engine Supplement (GMNA-Localizing-
U.S./Canada-14465442) - 2021 - CRC - 2/3/20
Vehicle Care 67
FusesUsage
F46 Cooling fan clutch F47 Heater crankcase ventilation
F48 Fog lamps
F49 Selective catalytic reduction power module wake up
F50 Trailer parking lamps F51 Horn
F52 –
F53 –
F54 –
F55 –
F56 Washer pump F57 –
F58 –
F59 –
F60 Mirror defogger F61 –
F62 Selective catalytic reduction power module
F63 – Fuses
Usage
F64 Trailer reverse lamps F65 Left trailer stoplamp/ Turnlamp
F66 Right trailer stoplamp/ Turnlamp
F67 Electric power steering
F68 –
F69 Battery regulated voltage control
F70 –
F71 –
F72 –
F73 –
F74 Generator F75 –
Relays Usage
K1 Air conditioning clutch
K2 Starter
K3 Powertrain sensor
K4 Wiper speed Relays
Usage
K5 Wiper control
K6 Cargo lamp/Bed lighting K7 Powertrain
K8 Fuel pump
K9 Front differential lock actuators
K10 Rear differential lock actuators
K11 Center high-mounted stoplamp
K12 Fuel heater
K13 Selective catalytic reduction power
module heater control/
Diesel exhaust fluid
control
K14 Trailer parking lamps K15 Run/Crank
K16 Cooling fan clutch K17 Rear window defogger/ Mirror defogger
