GMC Sierra (mk4; 2014-2018) fuses and relays

Fuse box diagram (location and assignment of electrical fuses and relays) for GMC Sierra (mk4; 2014, 2015, 2016, 2017, 2018)

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Fuse box diagram: GMC Sierra (mk4; 2014-2018)

2014, 2015, 2016, 2017
2018

Fuse box location

Passenger compartment fuse boxes

Instrument Panel Fuse Block (Left)
The left instrument panel fuse block access door is on the driver side edge of the instrument panelThe location of the fuses in the passenger compartment: GMC Sierra (2014, 2015, 2016, 2017, 2018, 2019)

Instrument Panel Fuse Block (Right)
The right instrument panel fuse block access door is on the passenger side edge of the instrument panelThe location of the fuses in the passenger compartment: GMC Sierra (2014, 2015, 2016, 2017, 2018, 2019)

Engine compartment fuse box

The engine compartment fuse block is in the engine compartment, on the driver side of the vehicleThe location of the fuses in the engine compartment: GMC Sierra (2014, 2015, 2016, 2017, 2018, 2019)

Fuse box diagrams 2014, 2015, 2016, 2017

Engine compartment

Under-hood fuse box diagram: GMC Sierra (2014, 2015, 2016, 2017)

Assignment of the fuses in the Engine compartment fuse box (2014-2017)
NumberUsage
Micro J-Case Fuses
1Trailer Brake
2Trailer Battery
J-Case Fuses
3Antilock Brake System Pump
4Instrument Panel BEC 1
5Spare
64WD Tree
7Spare
8Instrument Panel BEC 2
9Spare
10Rear Window Defogger
11Starter
12Cooling Fan 1
13Cooling Fan 2
Mini Fuses (2 Pin)
14Trailer Stop/Tum Lamps, Left
15Trailer Parking Lamps
16Trailer Back-up Lamp
17Trailer Stopfium Lamps, Right
Micro Fuses (2 Pin)
18Fuel Pump
19Integrated Chassis Control Module
20Electronic Suspension Control Module
21Fuel Pump Power Module
22Upfitter Switch 1
23Upfffler2
24Front Wiper
25Antilock Brake System Valves
26Upfitter SW 2
27Upfitter SW 3
28Parlang Lamps, Right
29Parlang Lamps, Left
30Upfitter 3
31Upfitter SW 4
32Upfitter 4
33Back-up Lamps
34Engine Control Module Ignition
35Air Conditioning Compressor Clutch
36Heated Mirrors
37Upfflter 1
38Center High-Mounted Stoplamp
39Miscellaneous Ignition
40Transmission Ignition
41Fuel Pump 2
42Cooling Fan Clutch
43Engine
44Fuel Injectors A, Odd
45Fuel Injectors B, Even
46Oxygen Sensor B
47Throttle Control
48Horn
49Fog Lamp
50Oxygen Sensor A
51Engine Control Module
52Interior Heater
53Spare
54Aeroshutter
55Front Washer
Micro Fuses (3 Pin)
56Air Conditioning Compressor/Battery Regulated Voltage Control
57Air Conditioning CompressorModule/Battery Pack
58Transmission Control Module/Engine Control Module
59Headlamps
Micro Relays
60Fuel Pump
61Upfitter2
62Upfitter3
63Upfitter4
64Trailer Parking Lamps
65Run/Crank
66Upfitter 1
67Fuel Pump 2
68Air Conditioning Control
69Starter
70Rear Window Defogger
71Engine Control Module
Solid State Relay
72Cooling Fan Clutch

Instrument Panel Fuse Block (Left)

Instrument panel fuse box diagram (left): GMC Sierra (2014, 2015, 2016, 2017)

Assignment of the fuses in the Instrument Panel Fuse Block (Left) (2014-2017)
NumberUsage
1Accessory Power Outlet 2
2SEO Retained Accessory Power
3Universal Garage Door Opener/lnside Rearview Mirror
6Body Control Module 3
7Body Control Module 5
8Driver Window Switch/Mirror Switch
9Spare
10Accessory Power Outlet Retained Accessory Power
11Accessory Power Outlet Battery
12Accessory Power Outlet 1/Cigarette Lighter
13Discrete Logic Ignition Switch
14Switch Backlighting
17Body Control Module 1
19Spare
20Spare
22Heater, Ventilation, and Air Conditioning/Auxiliary Heater, Ventilation and Air Conditioning Ignition
23Instrument Cluster Ignition/Sensing Diagnostic Module Ignition
24Spare
25Data Link Connector/Driver Seat Module
26Passive Entry Passive Start/Heater, Ventilation, and Air Conditioning
27Spare
28Spare
29Park Enable/Electrically Adjustable Pedals
30SEO
31Accessory/Run Crank
32Heated Steering Wheel
33Spare
34Instrument Cluster
36Spare
37Spare
40Lett Doors
41Driver Power Seat
43Lett Front Heated/Cooled Seat
44Right Front Heated/Cooled Seats
45Spare
49Retained Accessory Power/Accessory
50Run/Crank

Instrument Panel Fuse Block (Right)

Instrument panel fuse box diagram (right): GMC Sierra (2014, 2015, 2016, 2017)

Assignment of the fuses in the Instrument Panel Fuse Block (Right) (2014-2017)
NumberUsage
1Accessory Power Outlet 3
2Accessory Power Outlet 4
7Body Control Module 4
8Body Control Module 8
9Rear Seat Entertainment
10Cargo Lamp
15Steering Wheel Controls
18Radio
19Spare
20Sunroof
23Airbag/lnfo
26Export/Power Take Off/SEO Battery 1
27Obstacle Detection/USB Ports
28Body Control Module 2
32SEO Battery 2
35AC Inverter
36Amplifier
37Spare
39Rear Sliding Window
42Right Door Window Motor
43Front Blower
44SEO
45Body Control Module 6
46Body Control Module 7
47Passenger Seat
50Retained Accessory Power/Accessory
51Rear Sliding Window Open
52Rear Sliding Window Close

Fuse box diagrams 2018

Engine compartment

Assignment of the fuses in the Engine compartment fuse box (2018)
FusesUsage
1Trailer brake
2Trailer battery
3Antilock brake system pump
4Instrument panel BEC 1
5Passenger motorized seat belt
64WD transfer case electronic control
7Electric park brake
8Instrument panel BEC 2
9Driver motorized seat belt
10Rear window defogger
11Starter
12Cooling fan 1
13Cooling fan 2
14Left trailer stop/ Turn signal lamps
15Trailer parking lamps
16Trailer reverse lamps
17Right trailer stop/ Turn signal lamps
18Fuel pump
19Integrated chassis control module
20Electronic suspension control module
21Fuel pump power module
22Upfitter 1
23Upfitter2
24Front wiper
25Antilock brake system valve
26Upfitter 2
27Upfitter 3
28Right parking lamps
29Left parking lamps
30Upfitter 3
31Upfitter 4
32Upfitter 4
33Reverse lamps
34Engine control module/Ignition
35Air conditioning clutch
36Heated mirrors
37Upfitter 1
38Center high-mounted stoplamp
39Miscellaneous/ Ignition
40Transmission/ Ignition
41Fuel pump 2
42Cooling fan clutch
43Engine
44Fuel injectors A–odd
45Fuel injectors B–even
46O2 Sensor B
47Throttle control
48Horn
49Fog lamps
50O2 Sensor A
51Engine control module
52Interior heater
53Accessory power module/TPM pump
54Front washer
55Air conditioning/ Battery regulated voltage control
56Air conditioning module/ Battery pack
57Transmission control module/ Engine control module
58Headlamps
74Electric running boards (if equipped)
76Fuel pump prime / MGU motor
77Cabin pump motor
79Vacuum pump
Relays
59Fuel pump
60Upfitter 2
61Upfitter 3
62Upfitter 4
63Trailer parking lamps
64Run/Crank
65Upfitter 1
66Fuel pump 2
67Air conditioning control
68Starter
69Rear window defogger
70Engine control module
71Vacuum pump/ Cooling fan clutch
72CKT 95
73CKT 92
75Fuel pump prime/ MGU motor
78Vacuum pump switch

Instrument Panel Fuse Block (Left)

Assignment of the fuses in the Instrument Panel Fuse Block (Left) (2018)
FusesUsage
1Accessory power outlet 2
2Special equipment option/Retained accessory power
3Universal remote system/lnterior rearview mirror
6Body control module 3
7Body control module 5
8Driver window switch/ Mirror switch
9Not Used
10Accessory power outlet/Retained accessory power
11Accessory power outlet battery
12Accessory power outlet 1/Cigarette lighter
13Discrete logic ignition switch
14Switch backlighting
17Body control module 1
19Not Used
20Not Used
22Heating, ventilation, and air conditioning/ Auxiliary heating, ventilation, and air conditioning/lgnition
23Instrument cluster/ Ignition sensing diagnostic module/ Ignition
24Not Used
25Data link connector/ Driver seat module
26Passive entry/Passive start/Heating, ventilation, and air conditioning
27Not Used
28Not Used
29Park enable/ Electrically adjustable pedals
30Special equipment option
31Accessory/Run/Crank
32Heated steering wheel
33Not Used
34Instrument cluster
36Not Used
37Not Used
384WD transfer case electronic control
40Left doors
41Driver power seat
43Left heated, cooled or ventilated seats (if equipped)
44Right heated, cooled or ventilated seats (if equipped)
45Not Used
Relays
49Retained accessory power
50Run/Crank

Instrument Panel Fuse Block (Right)

Assignment of the fuses in the Instrument Panel Fuse Block (Right) (2018)
FusesUsage
1Accessory power outlet 3
2Accessory power outlet 4
7Body control module 4
8Body control module 8
9Rear seat entertainment
10Cargo lamp
15Steering wheel controls
18Radio
19Not Used
20Sunroof
23Airbag/lnfo
26Export/Power take off/ Special equipment option/Battery 1
27Obstacle detection/ USB ports
28Body control module 2
32Special equipment option/Battery 2
35Air conditioning inverter
36Amplifier
37Battery system
39Rear sliding window
42Right door window motor
43Front blower
44Special equipment option
45Body control module 6
46Body control module 7
47Passenger seat
Relays
50Retained accessory power
51Rear sliding window open
52Rear sliding window close
GMC Sierra (mk4; 2014-2018) fuses and relays March 30, 2019 admin