GMC Terrain (2018-2022..) fuses and relays

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In this article, we consider the second-generation GMC Terrain, available from 2018 to the present. Here you will find fuse box diagrams of GMC Terrain 2018, 2019, 2020, 2021, and 2022, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

See other GMC Terrain:

Fuse Layout GMC Terrain 2018-2022…

 

Cigar lighter (power outlet) fuses in the GMC Terrain are the fuse #37 (Cigarette lighter), circuit breakers CB1 (2018: Front auxiliary power outlet), CB2 (Auxiliary power outlet console) in the Instrument panel fuse box, and fuse #F21 (Rear auxiliary power outlet) in the Rear Compartment Fuse Block.

Fuse box location

Instrument panel

The instrument panel fuse block is under the instrument panel on the driver side.The location of the fuses in the passenger compartment: GMC Terrain (2018, 2019-...)

To access, press and release the latch near the top center square.

Engine compartment

The engine compartment fuse box is located on the driver side of the engine compartment.The location of the fuses in the engine compartment: GMC Terrain (2018, 2019-...)

Rear Compartment

The rear compartment fuse block is behind a trim panel on the side of the rear compartment. Remove the trim plate to access the fuse block.The location of the fuses in the trunk: GMC Terrain (2018, 2019-...)

Fuse box diagrams

Engine compartment

Under-hood fuse box diagram: GMC Terrain (2018, 2019, 2020)

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Assignment of the fuses in the engine compartment (2018-2022)
Usage
F01Starter 1
F02Starter 2
F03Lambda sensor 1
F04Engine control module
F052018-2020: FlexFuel sensor
2021: FlexFuel sensor/Aero shutter
2022: Aero Shutter/ Water Pump
F06Transmission control module
F07-
F082018-2021: Engine control module
F09Air conditioning clutch
F10Canister vent solenoid
F11Fuel system
F12Front heated seats
F13Afterboil pump
F14-
F15Lambda sensor 2
F162018: Fuel injectors-odd
2019-2022: Ignition coils
F172018: Fuel injectors - even.
2019-2022: Engine control module
F182018-2020: Selective catalytic reduction module (diesel only)
2022: Engine Control Module
F19NOx soot sensor (diesel only)
F20DC DC converter 2
F21Shift control
F22Antilock brake pump
F232018: Front washer.
2019-2022: Front/Rear washer pump
F24-
F25-/Diesel fuel heater (diesel only)
F26-
F27Antilock brake valves
F28LD trailer
F29Rear window defogger
F30Mirror defroster
F31
F32Variable functions
F33-
F34Horn
F352018: Vacuum pump.
F362018-2021: Right high-beam headlamp
2022: Headlamps / Daytime Running Lamps Right
F372018-2021: Left high-beam headlamp
F38Automatic headlamp leveling
F392018-2021: Fog lamps
F40-
F41Transmission range control module
F42Motorized headlamp
F432018: Fuel pump.
2019-2022: Not Used
F44Interior rearview mirror
F452018: Canister vent solenoid.
2019-2022: Passenger side ventilated seat
F46Driver side Ventilated Seat
F47Steering column lock assembly
F48Rear wiper
F49-
F50Heated steering wheel
F512018: Right headlamp.
2019-2021: Right daytime running lamp
F52Engine control module/ Transmission control
F53-
F542018: Front wiper.
F55Front wiper speed/ Control
F56-
F572018: Left headlamp.
2019-2021: Left daytime running lamp
2022: Headlamps / Daytime Running Lamps Left
Relays
K01Starter solenoid
K02Air conditioning control
K032019-2022: Engine control module
K04Wiper control
K05Starter Solenoid / Starter pinion
K06-/Fuel heater (diesel only)
K07-
K08-
K09Wiper speed
K10-
K11-
K122018-2021: High-beam headlamps
2022: Headlamps / Daytime Running Lamps Right
K132018-2021: Headlamps / Daytime running lamps
2022: Headlamps / Daytime Running Lamps Left
K14Run/Crank
K15Rear window defogger
*K16Horn
*K17Selective catalytic reduction (diesel only)
*K18Fog lamps
*K19Coolant pump
*K20-
*K21Rear washer
*K22Front washer
*K23Wiper control
* PCB relays are not serviceable.

Instrument panel

Instrument panel fuse box diagram: GMC Terrain (2018, 2019, 2020)

Assignment of the fuses in the Instrument panel (2018-2022)
Usage
F01DC AC inverter
F02Front windows
F03Trailer brake
F04Heating, ventilation, and air conditioning blower
F052018-2020: Body control module 2
F06Central gateway module (CGM)
F07-
F08Body control module 3
F09Amplifier
F10-
F11-
F12-
F13-
F14Electronic shifter
F15Transmission control module
F16Front heated seats
F17Left data link connector
F18Body control module 7
F19Exterior mirror
F202018-2020: Body control module 1
F21Body control module 4
F222018-2020: Body control module 6
F232018-2020: Electric steering column lock
F24Sensing and diagnostic module
F25Occupancy sensor
F26-
F27Power seats
F28Rear windows
F29-
F30Front heated seats switch
F31Steering wheel controls
F32Body control module 8
F33Heating, ventilation, and air conditioning
F34Passive entry, passive start
F35Liftgate latch
F362018: Shift charger.
2019-2022: Wireless charger module/ USB accessory
F37Cigarette lighter
F38OnStar
F39Instrument panel USB
F40Camera module/ Liftgate module
F412018-2020: Parking assist module
2021-2022: Park assist module/ Center stack display/ Heating, ventilation and air conditioner display/ Universal garage door opener/ Overhead control switchbank
F42Radio
Relays
K012018-2019: Deadbolt
K02Retained accessory power
K03Liftgate
K04-
K052018-2020: Logistics
Circuit Breakers
CB12018: Front auxiliary power outlet.
CB22018-2020: Auxiliary power outlet console

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Rear Compartment

Trunk fuse box diagram: GMC Terrain (2018, 2019, 2020)

Assignment of the fuses in the Rear Compartment (2018-2022)
Usage
F1 2018-2019: Exhaust fuel heater.
2020: Exhaust fuel heater/ Selective catalytic reduction power module (diesel only)
2022: Power Seat
F2 Liftgate
F3Trailer auxiliary power
F42018: Power seats.
2019-2021: Passenger Power Seat
F5Memory seat module
F6Sunroof
F7Side blind zone alert
F8Trailer reverse lamps
F9Rear heated seat 1
F10Parking assist
F11Rear heated seat 2
F12
F13Trailer parking lamp
F14Right trailer turn signal lamp
F152018-2021: Left parking lamp
F162018-2021: Right parking lamp
F172020-2022: Video processing module
F18Left trailer turn signal lamp
F19All-wheel drive
F20Lumbar
F21Rear auxiliary power outlet
F22Rear drive unit
Relays
K1Right trailer stoplamp/Turn signal lamp
K2Trailer reverse lamps
K3Left trailer stoplamp/Turn signal lamp
K4Park lamps
K52018-2019: Selective catalytic reduction (SCR) (diesel only).
2020: Exhaust fuel heater/Selective catalytic reduction power module (diesel only)