2019 GMC Yukon Fuses and Fuse Box Diagram User Guide

Table of Contents

2019 GMC Yukon Fuses and Fuse Box Diagram User Guide

The 2019 GMC Yukon fuse box diagram shows fuse and relay placement and function. Knowing fuse box locations helps identify and fix electrical issues, assuring vehicle reliability and safety.

2023 – 2024 GMC YUKON Review, Specs, Price and Mileage (Brochure)

Video: 2019 GMC Yukon Fuses

Electrical System

Electrical System Overload
The vehicle has fuses to protect against an electrical system overload. Fuses also protect power devices in the vehicle. Replace a bad fuse with a new one of the identical size and rating. If there is a problem on the road and a fuse needs to be replaced, there are some spare fuses and a fuse puller in the left instrument panel fuse block. The same amperage fuse can also be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible.

Headlamp Wiring
An electrical overload may cause the lamps to go on and off, or in some cases to remain off. Have the headlamp wiring checked right away if the lamps go on and off or remain off.

Windshield Wipers
If the wiper motor overheats due to heavy snow or ice, the windshield wipers will stop until the motor cools and will then restart. Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper linkage damage. Always clear ice and heavy snow from the windshield before using the windshield wipers. If the overload is caused by an electrical problem and not snow or ice, be sure to get it fixed.

Fuses and Circuit Breakers
The wiring circuits in the vehicle are protected from short circuits by a combination of fuses and circuit breakers. This greatly reduces the chance of damage caused by electrical problems.

Danger
Fuses and circuit breakers are marked with their ampere rating. Do not exceed the specified amperage rating when replacing fuses and circuit breakers. Use of an oversized fuse or circuit breaker can result in a vehicle fire. You and others could be seriously injured or killed.

To check a fuse, look at the silver-colored band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a new one of the identical size and rating. Fuses of the same amperage can be temporarily borrowed from another fuse location, if a fuse goes out. Replace the fuse as soon as possible.

Engine Compartment Fuse Block

The engine compartment fuse block is in the engine compartment, on the driver side of the vehicle.

Lift the cover to access the fuse block.

Caution
Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.

A fuse puller is available in the left instrument panel fuse block.

Fuse	Usage
1	Electric running boards
2	Antilock brake system pump
3	Interior BEC LT1
4	Passenger motorized seat belt
5	Suspension leveling compressor
6	4WD transfer case electronic control
7	–
8	–
10	Electric parking brake/ –
11	–
12	–
13	Interior BEC LT2
14	Rear BEC 1
15	–
16	–
17	Driver motorized seat belt
18	–
19	–
20	–
21	Automatic headlamp leveling/ Exhaust solenoid
22	Fuel pump
23	Integrated chassis control module
24	Real-time dampening
25	Fuel pump power module
26	Active Hydraulic Assist/ Battery regulated voltage control
27	–
28	Upfitter 2
30	Wiper
31	Trailer interface module
32	–
33	–
34	Reverse lamps
35	Antilock brake system valve
36	Trailer brakes
38	–
39	Right trailer stoplamp/Turn signal lamp
40	Left trailer stoplamp/Turn signal lamp
41	Trailer parking lamps
42	Right parking lamps
43	Left parking lamps
44	Upfitter 3
45	Automatic level control/Run/Crank
46	–
47	Upfitter 4
49	Reverse lamps
50	–
52	–
53	–
54	–
55	–
56	–
57	–
58	–
59	Euro trailer
60	Air conditioning control
61	–
62	–
63	Upfitter 1
64	–
65	–
66	–
67	Trailer battery
68	Secondary fuel pump
69	RC upfitter 3 and 4
70	VBAT upfitter 3 and 4
71	–
73	–
74	Engine control module/Ignition
75	Miscellaneous/Ignition/ –
76	Transmission/Ignition
77	RC upfitter 1 and 2
78	VBAT upfitter 1 and 2
79	–
80	–
81	–
82	–
83	Euro trailer/RC
85	–
86	–
87	MAF/IAT/Humidity/ TIAP sensor
88	Injector A – odd
89	Injector B – even
90	O2 sensor B
91	Throttle control
93	Horn
94	Fog lamps
95	High-beam headlamps
96	–
97	–
98	–
99	–
100	O2 sensor A
101	Engine control module
102	Engine control module/Transmission control module
103	Auxiliary interior heater
104	Starter
105	–
106	–
107	Aeroshutter
108	–
109	Police upfitter
110	–
111	–
113	–
114	Front windshield washer
115	Rear window washer
116	Left cooling fan
117	Fuel pump prime
118	–
119	–
120	–
121	Right HID headlamp
122	Left HID headlamp
123	Right cooling fan

Relay	Usage
9	Fuel pump
29	Upfitter 2
37	Upfitter 3
48	Upfitter 4
51	Parking lamp
64	Secondary fuel pump
72	Upfitter 1
84	Run/Crank
92	Engine control module
112	Starter
120	Fuel pump prime

Instrument Panel Fuse Block (Right)

The right instrument panel fuse block access door is on the passenger side edge of the instrument panel. Pull off the cover to access the fuse block.

There are relays on the back of the fuse block. To access, press the tabs and remove the fuse block. The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuse	Usage
1	–
2	–
3	–
4	Accessory power outlet 4
5	–
6	–
7	–
8	Glove box
9	–
10	–
11	–
12	Steering wheel controls
13	Body control module 8
14	–
15	–
16	–
17	–
18	Body control module 4
19	Rear seat entertainment
20	Sunroof
21	–
22	–
23	–
24	–
25	–
26	Infotainment/Airbag
27	-/RF window switch/Rain sensor
28	Obstacle detection/USB
29	Radio
30	–
31	–
32	–
33	–
34	–
35	–
36	Special equipment option B2
37	Special equipment option
38	Body control module 2
39	DC to AC inverter
40	–
41	–
42	–
43	–
44	Right door window motor
45	Front blower
46	Body control module 6
47	Body control module 7
48	Amplifier
49	Right front seat
50	Accessory power outlet 3
51	–
52	Retained accessory power

Instrument Panel Fuse Block (Left)

The left instrument panel fuse block access door is on the driver side edge of the instrument panel. Pull off the cover to access the fuse block.

The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuse	Usage
1	–
2	–
3	–
4	Accessory power outlet 1
5	Accessory power outlet from retained accessory power
6	Accessory power outlet from battery power
7	Universal garage door opener/Interior rearview mirror
8	SEO/Retained accessory power
9	–
10	Body control module 3
11	Body control module 5
12	Steering wheel control backlighting
13	–
14	–
15	–
16	Discrete logic ignition sensor
17	Video processing module/Virtual key module
18	Mirror window module
19	Body control module 1
20	Front bolster
21	–
22	–
23	–
24	HVAC ignition/AUX HVAC ignition
25	Instrument cluster/Ignition sensing diagnostic module ignition
26	Tilt column/Tilt column lock 1/SEO 1/SEO 2
27	Data link connector/Driver seat module
28	Passive locking, Passive theft-deterrent/HVAC battery
29	Content theft deterrent
30	–
31	–
32	–
33	SEO/Left heated seat
34	Park enable/Electric adjustable pedal
35	–
36	Miscellaneous/Run crank
37	Heated steering wheel
38	Steering column lock 2
39	Instrument cluster battery
40	–
41	–
42	Euro trailer
43	Left door
44	Driver power seat
45	–
46	Right heated, cooled, or ventilated seat
47	Left heated, cooled, or ventilated seat
48	–
49	–
51	–
54	–
55	–
56	–

Relay	Usage
50	Accessory power outlet 2
52	Retained accessory power
53	Miscellaneous run crank

Rear Compartment Fuse Block

The rear compartment fuse block is behind the access panel on the left side of the compartment. Pull the panel out by grabbing the finger access slot at the rear edge.

The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuse	Usage
2	–
3	Right-heated second-row seat
4	Heated mirrors
5	Liftgate
6	Glass breakage
7	Liftglass
8	Liftgate module logic
9	Rear wiper
10	Rear heating, ventilation, and air conditioning blower
11	Second-row seat
12	Liftgate module
13	Third-row seat
14	Rear accessory power outlet
15	Rear window defogger
19	Rear fog lamp (if equipped)

Relay	Usage
1	Rear window defogger
16	Liftgate
17	Liftglass
18	Rear fog lamp
20	Heated mirror

How to Change GMC Yukon Fuse

Changing a fuse in your GMC Yukon is a relatively simple process, but it’s important to proceed with caution to avoid any electrical issues or damage.

Here’s a step-by-step guide on how to change a fuse in your GMC Yukon:

Locate the Fuse Box: The fuse box in the GMC Yukon is typically located in the engine compartment on the driver’s side. It may also have a fuse box inside the vehicle, usually on the driver’s side dashboard or under the steering wheel.
Turn Off the Vehicle: Before you start working on the fuse, turn off the ignition and all electrical components in the vehicle to prevent any electrical hazards.
Remove the Fuse: Using a fuse puller tool or a pair of needle-nose pliers, gently grip the blown fuse and pull it straight out of its slot. Be careful not to exert too much force to avoid damaging the fuse or the fuse box.
Inspect the Fuse: Once you’ve removed the fuse, inspect it closely to confirm that it’s blown. Look for a visible break in the metal strip or a blackened appearance. If the fuse appears intact, it may not be the cause of the problem.
Replace the Fuse: Insert a new fuse of the same amperage rating into the empty slot. Make sure the new fuse is securely seated in place.
Test the Component: After replacing the fuse, turn on the ignition and test the component to ensure it’s functioning properly. If the fuse blows again immediately or if the component still doesn’t work, there may be an underlying electrical issue that requires further investigation.

Tips:

Always use a fuse with the same amperage rating as the original fuse. Using a fuse with a higher or lower rating can lead to electrical problems or damage to the vehicle.
Keep a variety of spare fuses with different amperage ratings in your vehicle in case of emergencies.
Regularly inspect and replace any blown fuses to ensure the proper functioning of your vehicle’s electrical system.

Useful Links

View Full PDF: GMC Yukon 2019 User Manual | Auto User Guide

2023 – 2024 GMC YUKON Review, Specs, Price and Mileage (Brochure)

2019 GMC Yukon Display | Warning Messages Guide

Video: 2019 GMC Yukon Fuses