2015 GMC Sierra fuse box diagram

The 2015 GMC Sierra has 3 different fuse boxes:

Engine Compartment Fuse Block diagramInstrument Panel Fuse Block (Left) diagramInstrument Panel Fuse Block (Right) diagram

Type	No.	Description
Fuse FMM/MCase	1	Trailer Brake
Fuse FMM/MCase	2	Trailer Battery
Fuse FMX/JCase	3	Antilock Brake System Pump
Fuse FMX/JCase	4	Instrument Panel BEC 1
Fuse FMX/JCase	5	Spare
Fuse FMX/JCase	6	4WD Trec
Fuse FMX/JCase	7	Spare
Fuse FMX/JCase	8	Instrument Panel BEC 2
Fuse FMX/JCase	9	Spare
Fuse FMX/JCase	10	Rear Window Defogger
Fuse FMX/JCase	11	Starter
Fuse FMX/JCase	12	Cooling Fan 1
Fuse FMX/JCase	13	Cooling Fan 2
Fuse MICRO2	14	Trailer Stop/Turn Lamps, Left
Fuse MICRO2	15	Trailer Park Lamps
Fuse MICRO2	16	Trailer Back-up Lamp
Fuse MICRO2	17	Trailer Stop/Turn Lamps, Right
Fuse MICRO2	18	Fuel Pump
Fuse MICRO2	19	Integrated Chassis Control Module
Fuse MICRO2	20	Electronic Suspensión Control Module
Fuse MICRO2	21	Fuel Pump Power Module
Fuse MICRO2	22	Upfitter Switch 1
Fuse MICRO2	23	Upfitter 2
Fuse MICRO2	24	Front Wiper
Fuse MICRO2	25	Antilock Brake System Valves
Fuse MICRO2	26	Upfitter SW 2
Fuse MICRO2	27	Upfitter SW 3
Fuse MICRO2	28	Parking Lamps, Right
Fuse MICRO2	29	Parking Lamps, Left
Fuse MICRO2	30	Upfitter 3
Fuse MICRO2	31	Upfitter SW 4
Fuse MICRO2	32	Upfitter 4
Fuse MICRO2	33	Back-up Lamps
Fuse MICRO2	34	Engine Control Module Ignition
Fuse MICRO2	35	Air Conditioning Compressor Clutch
Fuse MICRO2	36	Heated Mirrors
Fuse MICRO2	37	Upfitter 1
Fuse MICRO2	38	Center High-Mounted Stoplamp
Fuse MICRO2	39	Miscellaneous Ignition
Fuse MICRO2	40	Transmission Ignition
Fuse MICRO2	41	Fuel Pump 2
Fuse MICRO2	42	Cooling Fan Clutch
Fuse MICRO2	43	Engine
Fuse MICRO2	44	Fuel Injectors A, Odd
Fuse MICRO2	45	Fuel Injectors B, Even
Fuse MICRO2	46	Oxygen Sensor B
Fuse MICRO2	47	Throttle Control
Fuse MICRO2	48	Horn
Fuse MICRO2	49	Fog Lamp
Fuse MICRO2	50	Oxygen Sensor A
Fuse MICRO2	51	Engine Control Module
Fuse MICRO2	52	Interior Heater
Fuse MICRO2	53	Spare
Fuse MICRO2	54	Aeroshutter
Fuse MICRO3	55	Front Washer
Fuse MICRO3	56	Air Conditioning Compressor/ Battery Regulated Voltage Control
Fuse MICRO3	57	Air Conditioning Compressor Module/ Battery Pack
Fuse MICRO3	58	Transmission Control Module/ Engine Control Module
Relay	59	Headlamps
Relay	60	Fuel Pump
Relay	61	Upfitter 2
Relay	62	Upfitter 3
Relay	63	Upfitter 4
Relay	64	Trailer Park Lamps
Relay	65	Run/Crank
Relay	66	Upfitter 1
Relay	67	Fuel Pump 2
Relay	68	Air Conditioning Control
Relay	69	Starter
Relay	70	Rear Window Defogger
Relay	71	Engine Control Module
Fuse MICRO2	72	Cooling Fan Clutch

Type	No.	Description
Fuse FMM/MCase	1	Accessory Power Outlet 2
Fuse MICRO2	2	SEO Retained Accessory Power
Fuse MICRO2	3	Universal Garage Door Opener/Inside Rearview Mirror
Fuse MICRO2	6	Body Control Module 3
Fuse MICRO2	7	Body Control Module 5
Fuse MICRO2	8	Driver Window Switch/Mirror Switch
Fuse MICRO2	9	Spare
Fuse FMX/JCase	10	Accessory Power Outlet Retained Accessory Power
Fuse FMX/JCase	11	Accessory Power Outlet Battery
Fuse FMM/MCase	12	Accessory Power Outlet 1/Cigarette Lighter
Fuse MINI	13	Discrete Logic Ignition Switch
Fuse MINI	14	Switch Backlighting
Fuse MICRO2	17	Body Control Module 1
Fuse FMM/MCase	19	Spare
Fuse FMM/MCase	20	Spare
Fuse MICRO3	22	Heater, Ventilation and Air Conditioning/ Auxiliary Heater, Ventilation and Air Conditioning Ignition
Fuse MICRO3	23	Instrument Cluster Ignition/Sensing Diagnostic Module Ignition
Fuse MICRO3	24	Spare
Fuse MICRO3	25	Data Link Connector/Driver Seat Module
Fuse MICRO3	26	Passive Entry Passive Start/Heater, Ventilation and Air Conditioning
Fuse MICRO2	27	Spare
Fuse MICRO2	28	Spare
Fuse MICRO2	29	Park Enable/ Electrically Adjustable Pedals
Fuse MICRO2	30	SEO
Fuse MICRO2	31	Accessory/Run Crank
Fuse MICRO2	32	Heated Steering Wheel
Fuse MICRO2	33	Spare
Fuse MICRO2	34	Instrument Cluster
Fuse MICRO2	36	Spare
Fuse FMM/MCase	37	Spare
Fuse FMM/MCase	40	Left Doors
Fuse FMM/MCase	41	Driver Power Seat
Fuse MICRO2	43	Left Front Heated/ Cooled Seat
Fuse MICRO2	44	Right Front Heated/Cooled Seats
Fuse MICRO2	45	Spare
Relay	49	Retained Accessory Power/Accessory
Relay	50	Run/Crank

Type	No.	Description
Fuse FMM/MCase	1	Accessory Power Outlet 3
Fuse FMM/MCase	2	Accessory Power Outlet 4
Fuse MICRO2	7	Body Control Module 4
Fuse MICRO2	8	Body Control Module 8
Fuse MICRO2	9	Rear Seat Entertainment
Fuse MICRO2	10	Cargo Lamp
Fuse MINI	15	Steering Wheel Controls
Fuse MICRO2	18	Radio
Fuse MICRO2	19	Spare
Fuse FMM/MCase	20	Sunroof
Fuse MICRO3	23	Airbag/Info
Fuse MICRO3	26	Export/Power Take Off/SEO Battery 1
Fuse MICRO3	27	Obstacle Detection/ USB Ports
Fuse MICRO2	28	Body Control Module 2
Fuse MICRO2	32	SEO Battery 2
Fuse MICRO2	35	AC Inverter
Fuse MICRO2	36	Amplifier
Fuse MICRO2	37	Spare
Fuse FMM/MCase	39	Rear Sliding Window
Fuse FMM/MCase	42	Right Door Window Motor
Fuse FMX/JCase	43	Front Blower
Fuse MICRO2	44	SEO
Fuse MICRO2	45	Body Control Module 6
Fuse MICRO2	46	Body Control Module 7
Fuse FMM/MCase	47	Passenger Seat
Relay	50	Retained Accessory Power/Accessory
Relay	51	Rear Sliding Window Open
Relay	52	Rear Sliding Window Close

GMC Sierra fuse box diagrams change across years, pick the right year of your vehicle:

2015 GMC Sierra fuse box diagram - StartMyCar (2024)