2021 Chevrolet Bolt EV Fuses and Fuse Box | How to replace fuses
This 2021 Chevrolet Bolt EV has a full fusing system that is meant to protect all of the electrical parts inside the car. The fuses and the fuse box that goes with them are very important for protecting against electrical problems and making sure that important systems work right. Fuse boxes are usually placed in places that are easy to get to, like inside the cabin or under the hood, so they can be quickly accessed for maintenance. For the 2021 Chevrolet Bolt EV, it is important to follow a methodical process when changing the fuses. Start by looking in the owner’s manual to find the exact fuses that are connected to the broken part. Once you know which fuse is broken, carefully remove it using the fuse puller that came with the package or a pair of needle-nose pliers. Put in a new fuse with the same amperage number to make sure it fits securely. Maintaining the fuses properly is important for keeping the car’s electrical systems working well, and smartly replacing the fuses will keep them working well on the road.
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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 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 following in the vehicle:
- Headlamp wiring
- Windshield wiper motor
- Power windows and other power accessories
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 the wiper control is turned off. After removal of the blockage, the wiper motor will restart when the control is then moved to the desired operating position. Although the circuit is protected from electrical overload, overload due to heavy snow or ice may cause wiper 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.
See Accessories and Modifications 0 197 and General Information 0 197. 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.
Underhood Compartment Fuse Block
To open the fuse block cover, press the clips at the side and back and pull the cover-up.
Caution
Spilling liquid on any electrical component of 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, relays, and features shown.
| Fuses | Usage |
| 1 | – |
| 2 | Power window rear |
| 3 | – |
| 4 | Rechargeable energy storage system 1 |
| 5 | – |
| 7 | Left high beam headlamp |
| 8 | Right high beam headlamp |
| 9 | Left low beam headlamp |
| 10 | Right low beam headlamp |
| 11 | Horn |
| 12 | – |
| 13 | Front wiper motor driver |
| 14 | Liftgate |
| 15 | Front wiper motor co-driver |
| 16 | Electronic brake control module supply electronics |
| 17 | Rear wiper |
| 18 | Liftgate |
| 19 | Seat module front |
| 20 | Washer |
| 22 | Linear power module |
| 23 | Electronic brake control module supply motor |
| 24 | Seat module rear |
| 26 | Transmission range control module |
| 27 | Aeroshutter |
| 28 | Auxiliary oil pump |
| 29 | Electric brake boost motor source |
| 30 | Front power windows |
| 31 | In panel bussed electrical center |
| 32 | Rear window defogger |
| 33 | Heated exterior rearview mirror |
| 34 | Pedestrian-friendly alert function |
| 35 | – |
| 36 | – |
| 37 | Current sensor |
| 38 | Rain sensor |
| 39 | – |
| 40 | Electric brake boost (ECU) |
| 41 | Power line communication module |
| 42 | Infant-only suppression |
| 43 | Window switch |
| 44 | Rechargeable energy storage system |
| 45 | Vehicle integration control module |
| 46 | Integrated chassis control module |
| 47 | – |
| 48 | Integrated chassis control module |
| 49 | Interior rearview mirror |
| 50 | – |
| 51 | Electric brake boost |
| 52 | – |
| 54 | A/C control module |
| 55 | Rechargeable energy storage system coolant pump |
| 56 | – |
| 57 | Power electronics coolant pump |
| 58 | Engine control module |
| 59 | – |
| 60 | HVAC electric heater |
| 61 | Board charging module |
| 62 | Transmission range control module 1 |
| 63 | Electric cooling fan |
| 64 | Engine control module |
| 65 | Auxiliary heater pump |
| 66 | Powertrain |
| 67 | Drive unit controller |
| 70 | A/C control module |
| 71 | – |
| 72 | Transmission range control module |
| 73 | The single-power inverter module |
| 74 | – |
| Relays | Usage |
| 6 | Pedestrian-friendly alert function |
| 21 | HID lamp |
| 25 | Powertrain |
| 53 | Run/Crank |
| 68 | Rear window defogger |
| 69 | Second run/Crank |
Instrument Panel Fuse Block
The instrument panel fuse block is on the left side of the instrument panel.
To access the fuses, open the fuse panel door by pulling out. To reinstall the door, insert the top tab first, then push the door back into its original location.
| Fuses | Usage |
| F01 | Video processing module |
| F02 | Indicator light solar sensor |
| F03 | Side blind zone alert |
| F04 | Passive entry, passive start |
| F05 | CGM |
| F06 | Body control module 4 |
| F07 | Body control module 3 |
| F08 | Body control module 2 |
| F09 | Body control module 1 |
| F10 | Trailer Interface Module 1 |
| F11 | Amplifier |
| F12 | Body Control Module 8 |
| F13 | Data link connector 1 |
| F14 | Automatic parking assist |
| F15 | – |
| F16 | Single power inverter module 1 |
| F17 | Body Control Module 6 |
| F18 | Body Control Module 5 |
| F19 | – |
| F20 | – |
| F21 | – |
| F22 | – |
| F23 | USB |
| F24 | Wireless charging module |
| F25 | Reflected LED alert display |
| F26 | Heated steering wheel |
| F27 | CGM 2 |
| F28 | Instrument cluster 2 |
| F29 | Trailer Interface Module 2 |
| F30 | – |
| F31 | OnStar |
| F32 | Virtual key pass sensor |
| F33 | Heating, ventilation, and air conditioning module |
| F34 | Virtual keypad module |
| F35 | Instrument cluster 1 |
| F36 | Radio |
| F37 | – |
| F38 | – |
| F39 | – |
| F40 | – |
| F41 | – |
| F42 | – |
| F43 | Body Control Module 7 |
| F44 | Sensing and diagnostic module |
| F45 | Front camera module |
| F46 | Vehicle integration control module |
| F47 | Single power inverter module 2 |
| F48 | – |
| F49 | Auxiliary jack |
| F50 | Steering wheel controls |
| F51 | Steering wheel controls backlighting |
| F52 | – |
| F53 | Auxiliary power outlet |
| F54 | – |
| F55 | Logistic |
| F56 | – |
| F57 | – |
| F59 | – |
| Relays | Usage |
| F58 | Logistics relay |
| F60 | Accessory/Retained accessory power relay |
FAQs
Fuses protect electrical components by breaking the circuit if there’s an overload or short circuit.
The fuse box is typically located in the cabin or under the hood.
There may be multiple fuse boxes.
The vehicle may use blade-type fuses.
Visually inspect the fuse for a broken wire inside or use a multimeter to check for continuity.
It’s not recommended. Always replace a blown fuse with the same amp rating to prevent electrical issues or damage.
Some vehicles come with spare fuses. Check the fuse box cover.
Regularly inspect fuses and replace them as needed. If you notice electrical issues, check the fuses first.
No, it’s a relatively simple process. The owner’s manual provides step-by-step instructions.
Yes, most fuse replacements can be done without professional assistance.
Ensure the vehicle is turned off, and consult the manual for any specific precautions.
Yes, a blown fuse can lead to various electrical malfunctions in the vehicle.
In most cases, simply replace the fuse. If a circuit breaker tripped, reset it according to the manual.
If the problem persists, consult a professional mechanic or the dealership for further diagnosis.
Yes, keeping spare fuses in the vehicle can be helpful in case of emergencies. Make sure they are the correct amp rating.
Useful Link:
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