How to Replace Fuse: 2021 GMC Terrain Fuse Diagrams
Changing a switch in your 2021 GMC Terrain is an easy process that keeps many of the car’s electrical parts working. Fuses are safety devices that break the circuit to stop damage from electrical problems or overloads. To learn how to replace a fuse, you must first find the fuse box and identify the specific fuse that is causing the problem. You can do this by using the fuse diagrams or the ones that are usually written on the fuse box cover. By being careful and using the right tools, like fuse pullers or needle-nose pliers, you can quickly take out the blown fuse and replace it with a new one that has the same amperage rating.
2024 GMC Terrain Review, Specs, Price, and Mileage (Brochure)
Electrical System
Electrical System Overload
The vehicle has fuses and circuit breakers to protect against an electrical system overload. When the electrical load current 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. 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, 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.
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.
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. There is a fuse puller in the engine compartment fuse block. It can be used to easily remove fuses from the fuse block.
Engine Compartment Fuse Block
To remove the fuse block cover, squeeze the clips on the cover and lift it straight up.
Caution
Spilling liquid on any electrical component on the vehicle may damage it. Always keep the covers on any electrical component.
The vehicle may not be equipped with all of the fuses, relays, and features shown.
Instrument Panel Fuse Block
The instrument panel fuse block is under the instrument panel on the driver side. To access the fuses, press and release the latch near the top center square. Apply pressure to the two retaining tabs on the sides of the cover, until the two retaining tabs clear the sides of the instrument panel. Allow the panel to move downward and out of the way. To reinstall the cover, reverse the steps. The vehicle may not be equipped with all of the fuses and relays shown.
Rear Compartment Fuse Block
The rear compartment fuse block is behind a trim panel on the side of the rear compartment.
Remove the trim plate to access the fuse block. The vehicle may not be equipped with all of the fuses and relays shown.
How to Replace GMC Terrain Fuses
Replacing fuses in your GMC Terrain is a straightforward process that you can do yourself.
Here’s a step-by-step guide along with some helpful tips:
- Locate the Fuse Box: The fuse box in the GMC Terrain is usually located in the engine compartment or under the dashboard on the driver’s side.
- Turn Off the Vehicle: Before you start replacing fuses, make sure your Terrain is turned off completely. This prevents any electrical mishaps during the process.
- Use the Right Tools: It’s helpful to have a fuse puller or a pair of needle-nose pliers on hand to safely remove and replace the fuse. These tools make the process easier and reduce the risk of damaging the fuse or surrounding components.
- Remove the Blown Fuse: Gently grip the blown fuse with the fuse puller or needle-nose pliers and pull it straight out of the fuse box. Be careful not to use excessive force or wiggle the fuse, as this can damage the terminals.
- Select a Replacement Fuse: Choose a replacement fuse with the same amperage rating as the blown one. Using a fuse with a different rating could cause electrical problems or even damage to your vehicle.
- Insert the New Fuse: Align the new fuse with the corresponding slot in the fuse box and gently push it in until it is fully seated. Make sure it’s inserted straight and snugly to ensure a proper connection.
- Check Other Fuses: While you’re at it, it’s a good idea to check the other fuses in the fuse box for any signs of damage or wear. Replace any questionable fuses to prevent future issues.
- Test the Component: After replacing the fuse, turn on the vehicle and test the malfunctioning component to ensure it’s working properly. If the issue persists, there may be a larger electrical problem that requires professional attention.
- Keep Spare Fuses: It’s wise to keep a few spare fuses of different amperage ratings in your vehicle in case of emergencies. Store them in a safe place within easy reach so you can quickly replace a blown fuse when needed.
By following these steps and tips, you can confidently replace fuses in your GMC Terrain and keep its electrical systems running smoothly.
FAQs
The fuse box in the 2021 GMC Terrain is typically located in the engine compartment or under the dashboard on the driver’s side.
You may need a fuse puller or a pair of needle-nose pliers to safely remove and replace the fuse.
Ensure the vehicle is turned off and the corresponding electrical component is not active to prevent electrical shock or damage.
Use a fuse puller or needle-nose pliers to gently grasp the fuse and pull it straight out of the fuse box.
You can use needle-nose pliers to carefully grip and remove the fuse, ensuring not to damage the fuse or surrounding components.
The amperage rating is typically printed on the fuse itself or listed in the fuse diagram.
No, it’s essential to replace the blown fuse with one of the same amperage rating to prevent electrical damage or fire hazards.
Align the new fuse with the corresponding slot in the fuse box and gently push it in until it is fully seated.
If a fuse repeatedly blows, it may indicate an underlying electrical issue that requires professional diagnosis and repair.
It’s not recommended to drive with a blown fuse, as it may affect critical electrical systems or the safety features of your vehicle.
It’s a good idea to periodically inspect the fuses in your vehicle, especially if you experience electrical issues or notice malfunctioning components.
Certain fuses, such as those related to the radio, power windows, or interior lights, may be more prone to failure due to frequent use.
If replacing the fuse does not resolve the issue, it may indicate a more significant electrical problem that requires professional diagnosis and repair.
Useful Links
View Full PDF: GMC Terrain 2021 User Manual | Auto User Guide
2024 GMC Terrain Review, Specs, Price, and Mileage (Brochure)