2022 GMC Hummer EV Fixing a Blown Fuse | Fuse Diagrams
Fixing a blown fuse in a 2022 GMC Hummer EV is an important part of maintaining the car and fixing electrical problems. With the help of fuse diagrams, drivers can quickly find the fuse that is connected to the broken part. Checking the fuse diagrams is a quick and easy way to find the bad fuse, whether it’s for a light, radio, or other electrical feature. By following the diagrams and finding the right fuse, drivers can easily take out the blown fuse and replace it with a new one that has the same amperage. This easy step-by-step process helps protect the purity of the car’s electrical system, making sure it works perfectly and continuously while you’re driving.
Electrical System
High Voltage Devices and Wiring
Warning
Exposure to high voltage can cause shock, burns, and even death. The high-voltage components in the vehicle can only be serviced by technicians with special training. High-voltage components are identified by labels. Do not remove, open, take apart, or modify these components. High voltage cable or wiring has an orange covering or labels. Do not probe, tamper with, cut, or modify high-voltage cables or wiring.
Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the current electrical load is too heavy, the circuit breaker opens and closes, protecting the circuit until the current load returns to normal or the problem is fixed. This greatly reduces the chance of circuit overload and fire caused by electrical problems. Fuses and circuit breakers protect the wires that provide the power to the devices in your vehicle. If there is a problem on the road and a fuse needs to be replaced, the same amperage fuse can be borrowed. Choose some feature of the vehicle that is not needed to use and replace it as soon as possible. To check a fuse, look at the band inside the fuse. If the band is broken or melted, replace the fuse. Be sure to replace a bad fuse with a fuse of identical size and rating.
Replacing a Blown Fuse
- Turn off the vehicle.
- Locate the fuse puller in the underhood compartment fuse block.
- Use the fuse puller to remove the fuse from the top or side, as shown above.
- If the fuse must be replaced immediately, borrow a replacement fuse with the same amperage from the fuse block. Choose a vehicle feature that is not needed to safely operate the vehicle. Repeat Steps 2–3.
- Insert the replacement fuse into the empty slot of the blown fuse.
At the next opportunity, see your dealer to replace the blown fuse.
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. The use of an oversized fuse or circuit breaker can result in a vehicle fire. You and others could be seriously injured or killed.
Warning
Installation or use of fuses that do not meet GM’s original fuse specifications is dangerous. The fuses could fail, and result in a fire. You or others could be injured or killed, and the vehicle could be damaged.
Underhood Compartment Fuse Block
To Access:
- Open the hood.
- The Underhood Compartment Fuse Block is under a cover and side extensions/ shields in the underhood compartment. Complete a three-quarter turn on each of the three bolts on the left-side access cover.
- Press the clips at the side and back and pull the cover up 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 in the underhood compartment fuse block. The vehicle may not be equipped with all of the fuses and features shown.
Fuses Usage
Instrument Panel Fuse Block (Left)
The instrument panel fuse block is on the driver’s side of the instrument panel, between the steering wheel and the door. To access the fuses, remove the panel, starting at the bottom. Once clips are disengaged, the tabs along the top of the door can be disengaged from the instrument panel to remove the door.
To reinstall the door, place the top tabs into the slots, and rotate the door into position, engaging the clips. The vehicle may not be equipped with all of the fuses, relays, and features shown.
Fuses Usage
Circuit Usage
Breakers
Instrument Panel Fuse Block (Right)
The instrument panel fuse block is located behind the glove box. It is accessible by removing the hush panel located underneath the glove box. To remove the hush panel, remove the four push-pins that secure the hush panel.
See your dealer if additional assistance is needed.
The vehicle may not be equipped with all of the fuses and relays shown.
Fuses Usage
Circuit Usage
Breakers
FAQs
You can visually inspect the fuse for signs of damage, such as a broken wire inside it.
The fuse diagrams are typically located on the fuse box cover or inside the fuse box panel in the vehicle.
You may need a fuse puller tool or a pair of needle-nose pliers to safely remove the blown fuse from its socket.
It’s crucial to replace the blown fuse with one of the same amperage rating to avoid damaging the electrical system.
Use a fuse puller tool or a pair of needle-nose pliers to grasp the blown fuse and gently pull it straight out of its socket.
Blown fuses can occur due to various reasons, including electrical faults, overloading of circuits, or malfunctioning components.
Fuses are designed to trip when they detect an electrical overload or fault, and they must be replaced once tripped.
It’s a good practice to periodically inspect the fuses and replace any that are blown to ensure the vehicle’s electrical systems operate smoothly.
Ensure the vehicle’s ignition is turned off before replacing fuses to prevent electrical accidents.
Yes, you can visually inspect a fuse for signs of damage, such as a broken wire inside it.
You can use a multimeter to test the continuity of the fuse or visually inspect it for signs of damage.
Identify the blown fuse using the fuse diagrams, remove it from its socket, and replace it with a new fuse of the same amperage rating.
Always ensure the vehicle’s ignition is turned off and use caution when handling electrical components to prevent shocks or damage to the vehicle.
While some blown fuses are inevitable, you can minimize the risk by avoiding overloading electrical circuits and addressing any underlying electrical issues promptly.
Useful Links
View Full PDF: GMC Hummer EV 2022 User Guide | Auto User Guide