Learn about Chevrolet Blazer 2023-2024 fuse box and relay’s locations, functions, and maintenance tips for optimal vehicle electrical system.
The 2023-2024 Chevrolet Blazer is a midsize SUV known for its bold styling and sporty design, catering to drivers looking for both practicality and flair. Available in multiple trims, including the RS and Premier, the Blazer features an athletic stance, sculpted lines, and a spacious cabin. It offers versatile seating, ample cargo space, and a host of tech features, making it ideal for both city driving and weekend adventures.
The Blazer’s electrical system powers key features like the infotainment system, safety aids, and climate control. Its fuse box and relays ensure smooth functionality of these components. The main fuse box is located under the hood, near the engine compartment, while another fuse box is often positioned inside the cabin, typically on the passenger side. Relays, found near these fuse boxes, manage high-power systems, including the ignition and cooling fans. Regular inspection and maintenance of these electrical components are crucial for reliability.
MUST READ: DYI – How to Check Car Fuses?
(2023-2024) Chevrolet Blazer fuse box and relay with Diagram
WARNING
- Never replace a fuse with one that has a higher amperage rating.
- A fuse with a too-high amperage could damage the electrical part and cause a fire.
- On no account should fuses be repaired (e.g. patched up with tin foil or wire) as this may cause serious damage elsewhere in the electrical circuit or cause a fire.
- If a fuse blows repeatedly, do not keep replacing it. Instead, have the cause for the repeated short circuit or overload tracked and fixed.
- Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
Chevrolet Blazer 2023-2024 fuse assignment
Chevrolet Blazer Year of production: 2023, 2024
Location of Fuse Boxes
Instrument Panel Fuse Block:
The instrument panel fuse block is inside the center console on the passenger side of the vehicle. Remove the fuse access door by inserting a coin or tool into the slot of the access door.
After accessing the fuses, ensure the fuse block cover is reinstalled, if equipped. To reinstall the fuse panel door, push the door back into its original location.
Engine Compartment Fuse Block:
The underhood fuse block is in the engine compartment, on the driver side of the vehicle. To remove the fuse block cover, press the clips on the cover and lift it straight up.
Rear Compartment Fuse Block:
The rear compartment fuse block is behind a trim cover on the driver side of the rear storage compartment. Remove the trim cover to access the fuse block or visit your dealer. The fuse block label is located on the central bin.
Fuse Box Diagrams
2023
Instrument Panel Fuse Block
List of fuses in the Instrument Panel Fuse Block (2023)
| № | Usage |
|---|---|
| F1 | Body Control Module 6 |
| F2 | Diagnostic Link / Central Gateway Module |
| F3 | Spare / Electric Steering Column Lock |
| F4 | – |
| F5 | – |
| F6 | Heating, Ventilation, and Air Conditioning |
| F7 | Body Control Module 3 |
| F8 | – |
| F9 | Right Front Heated Seat |
| F10 | Airbag / Seatbelt |
| F11 | – |
| F12 | Amplifier / Noise Control Module |
| F13 | Body Control Module 7 |
| F14 | Left Front Heated Seat |
| F15 | – |
| F16 | Sunroof |
| F17 | – |
| F18 | Instrument Cluster |
| F19 | Body Control Module 1 |
| F20 | Rear Seat Entertainment |
| F21 | Body Control Module 4 |
| F22 | Infotainment USB Data / Aux Jack |
| F23 | Body Control Module 2 |
| F24 | USB Charger / Wireless Charging |
| F25 | Park Assist |
| F26 | Communications Integration Module |
| F27 | – |
| F28 | Heating, Ventilation, and Air Conditioning / Information Communication System Display |
| F29 | Radio |
| F30 | Steering Wheel Adjustment Controls |
| F31 | Electric Brake Control Module Electric Brake Booster |
| F32 | DC AC Inverter |
| F33 | Driver Power Seat |
| F34 | Passenger Power Seat |
| F35 | Battery IEC1 Feed |
| F36 | Electric Power Steering |
| F37 | Rear Seat Entertainment / USB Charge / Wireless Charging Module / Auxiliary Power Outlet / Lighter |
| F38 | Body Control Module 8 |
| F39 | – |
| Circuit Breakers / Minifuse | |
| F40 | – |
| F41 | – |
| F42 | Auxiliary Power Outlet (CB) / Lighter (Minifuse) |
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2023)
| № | Usage |
|---|---|
| F1 | Antilock Brake System Pump |
| F2 | Starter 1 |
| F3 | DC DC Transformer 1 |
| F4 | – |
| F5 | DC DC Transformer 2 |
| F6 | – |
| F7 | Front Blower |
| F8 | Starter 3 |
| F9 | – |
| F10 | – |
| F11 | – |
| F12 | Front Wiper |
| F13 | Starter 2 |
| F14 | – |
| F15 | Rear Wiper |
| F16 | – |
| F17 | Daytime Running Lamp Left |
| F18 | – |
| F19 | – |
| F20 | – |
| F21 | – |
| F22 | Electronic Brake Control Module |
| F23 | Parking / Trailer Lamps |
| F24 | Right Trailer Stoplamp / Turnlamp |
| F25 | Spare |
| F26 | Daytime Running Lamp Right |
| F27 | Left Trailer Stoplamp / Turnlamp |
| F28 | – |
| F29 | – |
| F30 | Washer Pump |
| F31 | – |
| F32 | – |
| F33 | – |
| F34 | Horn |
| F35 | – |
| F36 | – |
| F37 | – |
| F38 | Spare |
| F39 | Transmission Control Module |
| F40 | Left Rear Bus Electrical Center / DC DC Ignition |
| F41 | Instrument Cluster |
| F42 | Heating, Ventilation, and Air Conditioning / Central Gateway Module Run/Crank |
| F43 | Reflective Light Alert Display |
| F44 | Electronic Brake Control Module / Electric Brake Booster / Run/Crank |
| F45 | – |
| F46 | – |
| F47 | – |
| F48 | – |
| F49 | Interior Rearview Mirror |
| F50 | Fuel Tank Zone Module Run/Crank |
| F51 | Heated Steering Wheel |
| F52 | Air Conditioning Clutch |
| F53 | Coolant Pump |
| F54 | – |
| F55 | – |
| F56 | – |
| F57 | Engine Control Module / Ignition |
| F58 | Transmission Control Module / lgnition |
| F59 | Engine Control Module Battery |
| F60 | – |
| F61 | O2 Sensor 1 / Aeroshutter / Mass Air Flow Sensor |
| F62 | Engine Control Module-Odd |
| F63 | O2 Sensor 2 |
| F64 | Engine Control Module-Even |
| F65 | Engine Control Module Powertrain 1 |
| F66 | Engine Control Module Powertrain 2 |
| F67 | Engine Control Module Powertrain 3 |
| F68 | – |
| F69 | – |
| F70 | – |
| F71 | – |
| F72 | – |
| F73 | – |
| F74 | – |
| F75 | – |
| F76 | – |
| F77 | – |
| Relays | |
| K1 | Starter 1 |
| K2 | Run/Crank |
| K3 | Starter 3 |
| K4 | – |
| K5 | – |
| K6 | – |
| K7 | Engine Control Module |
| K8 | Air Conditioning |
| K9 | – |
| K10 | Starter 2 |
Rear Compartment Fuse Block
List of fuses in the Rear Compartment Fuse Block (2023)
| № | Usage |
|---|---|
| F1 | – |
| F2 | Trailer Battery |
| F3 | – |
| F4 | Spare/Rear Blower |
| F5 | Rear Drive Control 1 |
| F6 | – |
| F7 | Right Window |
| F8 | Rear Window Defogger |
| F9 | Left Window |
| F10 | – |
| F11 | Trailer Reverse |
| F12 | – |
| F13 | – |
| F14 | – |
| F15 | – |
| F16 | – |
| F17 | – |
| F18 | – |
| F19 | – |
| F20 | Glove Box Door / Trailer Stoplamp |
| F21 | – |
| F22 | – |
| F23 | – |
| F24 | – |
| F25 | – |
| F26 | Trailer Brake |
| F27 | Driver Ventilated Seat / Lumbar |
| F28 | Passive Entry / Passive Start |
| F29 | – |
| F30 | Canister Vent |
| F31 | – |
| F32 | Heated Mirrors |
| F33 | – |
| F34 | Liftgate Module |
| F35 | Fuel Tank Zone Module |
| F36 | Passenger Ventilated Seat / Lumbar |
| F37 | – |
| F38 | Window Module |
| F39 | Rear Closure |
| F40 | Memory Seat Module |
| F41 | Automatic Occupancy Sensor |
| F42 | – |
| F43 | – |
| F44 | – |
| F45 | Liftgate Motor |
| F46 | Rear Heated Seats |
| F47 | – |
| F48 | – |
| F49 | – |
| F50 | – |
| F51 | – |
| F52 | Rear Drive Control 2 / Semi-active Dampening System Module |
| F53 | Video |
| F54 | External Object Calculating / Side Blind Zone Alert |
| F55 | – |
| F56 | Universal Remote / Rain Sensor |
| F57 | Alarm Overhead Console / Theft Deterrent |
| Circuit Breakers | |
| CB1 | – |
| CB2 | – |
| CB3 | Rear Auxiliary Power Outlet |
| Relays | |
| K1 | – |
| K2 | – |
2024
Instrument Panel Fuse Block
List of fuses in the Instrument Panel Fuse Block (2024)
| № | Usage |
|---|---|
| F1 | Body Control Module 6 |
| F2 | Diagnostic Link / Central Gateway Module |
| F3 | Spare / Electric Steering Column Lock |
| F4 | – |
| F5 | – |
| F6 | Heating, Ventilation, and Air Conditioning |
| F7 | Body Control Module 3 |
| F8 | – |
| F9 | Right Front Heated Seat |
| F10 | Airbag / Seatbelt |
| F11 | – |
| F12 | Amplifier / Noise Control Module |
| F13 | Body Control Module 7 |
| F14 | Left Front Heated Seat |
| F15 | – |
| F16 | Sunroof |
| F17 | – |
| F18 | Instrument Cluster |
| F19 | Body Control Module 1 |
| F20 | Rear Seat Entertainment |
| F21 | Body Control Module 4 |
| F22 | Infotainment USB Data / Aux Jack |
| F23 | Body Control Module 2 |
| F24 | USB Charger / Wireless Charging |
| F25 | Park Assist |
| F26 | Communications Integration Module |
| F27 | – |
| F28 | Heating, Ventilation, and Air Conditioning / Information Communication System Display |
| F29 | Radio |
| F30 | Steering Wheel Adjustment Controls |
| F31 | Electric Brake Control Module Electric Brake Booster |
| F32 | DC AC Inverter |
| F33 | Driver Power Seat |
| F34 | Passenger Power Seat |
| F35 | Battery IEC1 Feed |
| F36 | Electric Power Steering |
| F37 | Rear Seat Entertainment / USB Charge / Wireless Charging Module / Auxiliary Power Outlet / Lighter |
| F38 | Body Control Module 8 |
| F39 | – |
| Circuit Breakers / Minifuse | |
| F40 | – |
| F41 | – |
| F42 | Auxiliary Power Outlet (CB) / Lighter (Minifuse) |
Engine Compartment Fuse Block
List of fuses in the Engine Compartment Fuse Block (2024)
| № | Usage |
|---|---|
| F1 | Antilock Brake System Pump |
| F2 | Starter 1 |
| F3 | DC DC Transformer 1 |
| F4 | – |
| F5 | DC DC Transformer 2 |
| F6 | – |
| F7 | Front Blower |
| F8 | Starter 3 |
| F9 | – |
| F10 | – |
| F11 | – |
| F12 | Front Wiper |
| F13 | Starter 2 |
| F14 | – |
| F15 | Rear Wiper |
| F16 | – |
| F17 | Daytime Running Lamp Left |
| F18 | – |
| F19 | – |
| F20 | – |
| F21 | – |
| F22 | Electronic Brake Control Module |
| F23 | Parking / Trailer Lamps |
| F24 | Right Trailer Stoplamp / Turnlamp |
| F25 | Spare |
| F26 | Daytime Running Lamp Right |
| F27 | Left Trailer Stoplamp / Turnlamp |
| F28 | – |
| F29 | – |
| F30 | Washer Pump |
| F31 | – |
| F32 | – |
| F33 | – |
| F34 | Horn |
| F35 | – |
| F36 | – |
| F37 | – |
| F38 | Spare |
| F39 | Transmission Control Module |
| F40 | Left Rear Bus Electrical Center / DC DC Ignition |
| F41 | Instrument Cluster |
| F42 | Heating, Ventilation, and Air Conditioning / Central Gateway Module Run/Crank |
| F43 | Reflective Light Alert Display |
| F44 | Electronic Brake Control Module / Electric Brake Booster / Run/Crank |
| F45 | – |
| F46 | – |
| F47 | – |
| F48 | – |
| F49 | Interior Rearview Mirror |
| F50 | Fuel Tank Zone Module Run/Crank |
| F51 | Heated Steering Wheel |
| F52 | Air Conditioning Clutch |
| F53 | Coolant Pump |
| F54 | – |
| F55 | – |
| F56 | – |
| F57 | Engine Control Module / Ignition |
| F58 | Transmission Control Module / lgnition |
| F59 | Engine Control Module Battery |
| F60 | – |
| F61 | O2 Sensor 1 / Aeroshutter / Mass Air Flow Sensor |
| F62 | Engine Control Module – Coil Odd |
| F63 | O2 Sensor 2 / Miscellaneous Powertrain |
| F64 | Engine Control Module – Coil Even |
| F65 | Engine Control Module Powertrain 1 |
| F66 | Engine Control Module Powertrain 2 |
| F67 | Engine Control Module Powertrain 3 |
| F68 | – |
| F69 | – |
| F70 | – |
| F71 | – |
| F72 | – |
| F73 | – |
| F74 | – |
| F75 | – |
| F76 | – |
| F77 | – |
| Relays | |
| K1 | Starter 1 |
| K2 | Run/Crank |
| K3 | Starter 3 |
| K4 | – |
| K5 | – |
| K6 | – |
| K7 | Engine Control Module |
| K8 | Air Conditioning |
| K9 | – |
| K10 | Starter 2 |
Rear Compartment Fuse Block
List of fuses in the Rear Compartment Fuse Block (2024)
| № | Usage |
|---|---|
| F1 | – |
| F2 | Trailer Battery |
| F3 | |
| F4 | Spare / Rear Blower |
| F5 | Rear Drive Control 1 |
| F6 | – |
| F7 | Right Window |
| F8 | Rear Window Defogger |
| F9 | Left Window |
| F10 | – |
| F11 | Trailer Reverse |
| F12 | – |
| F13 | – |
| F14 | – |
| F15 | – |
| F16 | – |
| F17 | – |
| F18 | – |
| F19 | – |
| F20 | Glove Box Door / Trailer Stoplamp |
| F21 | – |
| F22 | – |
| F23 | – |
| F24 | – |
| F25 | – |
| F26 | Trailer Brake |
| F27 | Driver Ventilated Seat / Lumbar |
| F28 | Passive Entry / Passive Start |
| F29 | – |
| F30 | Canister Vent |
| F31 | – |
| F32 | Heated Mirrors |
| F33 | – |
| F34 | Liftgate Module |
| F35 | Fuel Tank Zone Module |
| F36 | Passenger Ventilated Seat / Lumbar |
| F37 | – |
| F38 | Window Module |
| F39 | Rear Closure |
| F40 | Memory Seat Module |
| F41 | Automatic Occupancy Sensor |
| F42 | – |
| F43 | – |
| F44 | – |
| F45 | Liftgate Motor |
| F46 | Rear Heated Seats |
| F47 | – |
| F48 | – |
| F49 | – |
| F50 | – |
| F51 | – |
| F52 | Rear Drive Control 2 / Semi-active Dampening System Module |
| F53 | Video |
| F54 | External Object Calculating / Side Blind Zone Alert |
| F55 | – |
| F56 | Universal Remote / Rain Sensor |
| F57 | Alarm Overhead Console / Theft Deterrent |
| Circuit Breakers | |
| CB1 | – |
| CB2 | – |
| CB3 | Rear Auxiliary Power Outlet |
| Relays | |
| K1 | – |
| K2 | – |
Conclusion
The Chevrolet Blazer 2023-2024 combines sporty style and functionality. Proper care of its fuse box and relays is essential to maintain the reliability of its advanced features.
