Relay and Fuse Diagrams: 2019 GMC Yukon Fuse Replacement
The 2019 GMC Yukon has a complicated network of electrical parts. Relay and fuse pictures are very helpful because they show you how to quickly and easily fix problems. Understanding how to replace fuses becomes an important skill for drivers as they learn more about car maintenance. This is because it makes sure that all of the systems and parts work properly. These images show the relays and fuses that are used to protect against electrical problems and fix small ones. They are very helpful for understanding how the Yukon’s electricity works. This complete guide takes you on a tour of the 2019 GMC Yukon’s switch and fuse diagrams, explaining what each one means and how to change a fuse. With this information, drivers can easily deal with electrical problems, making sure that their beloved Yukon runs at its best and is reliable on every trip.
2023 – 2024 GMC YUKON Review, Specs, Price and Mileage (Brochure)
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.
FAQs
The fuse and relay diagrams in the 2019 GMC Yukon serve as visual guides to help drivers identify and locate specific fuses and relays for various electrical components in the vehicle.
The fuse box in the 2019 GMC Yukon is typically located in the engine compartment on the driver’s side. There may also be a fuse box inside the vehicle, usually near the driver’s side dashboard or under the steering wheel.
Using the fuse diagram provided on the fuse box cover or inside the fuse box, you can identify the fuse corresponding to the malfunctioning component by its amperage rating and position.
Before replacing a fuse, ensure the vehicle’s ignition and all electrical components are turned off to prevent electrical hazards. It’s also recommended to wear safety gloves to protect your hands.
No, it’s essential to use a fuse with the same amperage rating as the original one. Using a fuse with a higher or lower rating can lead to electrical issues or damage to the vehicle.
Replacement fuses compatible with the 2019 GMC Yukon can be purchased at most automotive parts stores, hardware stores, or online retailers specializing in auto parts.
Use a fuse puller tool or a pair of needle-nose pliers to grip the blown fuse firmly and pull it straight out of its slot in the fuse box.
Insert the new fuse of the same amperage rating into the empty slot in the fuse box, ensuring it is securely seated in place.
Yes, you can visually inspect a fuse to identify signs of damage, such as a visible break in the metal strip or a blackened appearance.
It’s a good practice to periodically inspect and replace any blown fuses in your 2019 GMC Yukon to ensure the proper functioning of the vehicle’s electrical system.
Typically, you’ll only need a fuse puller tool or a pair of needle-nose pliers to remove and replace fuses in your 2019 GMC Yukon.
It’s important to handle fuses with care and avoid touching the metal contacts to prevent electrical shocks or damage to the fuse.
Avoid overloading electrical circuits by using proper accessories and adhering to the vehicle’s recommended electrical load limits.
It’s recommended to use OEM (Original Equipment Manufacturer) or high-quality replacement fuses to ensure compatibility and reliability in your 2019 GMC Yukon.
Useful Links
View Full PDF: GMC Yukon 2019 User Manual | Auto User Guide
2023 – 2024 GMC YUKON Review, Specs, Price and Mileage (Brochure)