Chevrolet Blazer 2023 Engine Compartment User Guide

Chevrolet Blazer 2023 Engine Compartment Fuse Block User Guide

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 cable 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 power devices in the 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

1. Turn off the vehicle.
2. Locate the fuse puller in the engine compartment fuse block.
3. Use the fuse puller to remove the fuse from the top or side, as shown above.
4. 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.
5. 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.

See Accessories and Modifications 0 247 and General Information 0 247.
To check or replace a blown fuse, see Electrical System Overload 0 268.

Engine Compartment Fuse Block

The under-hood fuse block is in the engine compartment, on the driver’s side of the vehicle.

Caution
Do not pull the engine compartment fuse block lever, since it is intended only for service purposes. If pulled, vehicle malfunction may occur .To remove the fuse block cover, press 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. To remove fuses, use the fuse puller and pull straight out.

The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuses Usage
F1 Antilock Brake System Pump

Fuses Usage

• 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 –

Fuses Usage

• F21 –
• F22 Electronic Brake Control
• Module
• F23 Parking/Trailer Lamps
• F24 Right Trailer Stop lamp
• Turnham
• F25 Spare
• F26 Daytime Running Lamp
• Right
• F27 Left Trailer Stop lamp
• Turnham
• F28 –
• F29 –
• F30 Washer Pump
• F31 –
• F32 –
• F33 –
• F34 Horn
• F35 –
• F36 –
• F37 –

Fuses Usage

• 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
• Fuses Usage
• F52 Air Conditioning Clutch
• F53 Coolant Pump
• F54 –
• F55 –
• F56 –
• F57 Engine Control Module/
• Ignition
• F58 Transmission Control
• Module/Ignition
• 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

Fuses Usage

• F66 Engine Control Module
• Powertrain 2
• F67 Engine Control Module
• Powertrain 3
• F68 –
• F69 –
• F70 –
• F71 –
• F72 –
• F73 –
• F74 –
• F75 –
• F76 –
• F77 –
• Relays Usage
• K1 Starter 1
• K2 Run/Crank
• K3 Starter 3
• K4 –
• K5 –

Relays Usage

• K6 –
• K7 Engine Control Module
• K8 Air Conditioning
• K9 –
• K10 Starter 2

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. To remove a fuse, use the fuse puller located in the Engine Compartment Fuse block.

The vehicle may not be equipped with all of the fuses, relays, and features shown.

Fuses 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

Fuses Usage

• 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
• Fuses Usage
• F31 Electric Brake Control
• Module Electric Brake
• Booster
• F32 DC AC Inverter
• F33 Driver Power Seat
• F34 Passenger Power Seat
• F35 Battery IEC 1 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
• Minifies
• Usage
• F40 –
• F41 –
• F42 Auxiliary Power Outlet (CB)/Lighter (Minifies)

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.

Fuses Usage

• F1 –
• F2 Trailer Battery

Fuses Usage

• F3 –
• F4 Spare/Rear Blower

Fuses Usage

• 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
• Stop lamp
• F21 –
• F22 –
• F23 –

Fuses Usage

• 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

Fuses Usage

• 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

Fuses Usage

• F57 Alarm Overhead
• Console/Theft Deterrent
• Circuit Breakers Usage
• CB1 –
• CB2 –
• CB3 Rear Auxiliary Power
• Outlet
• K1 –
• K2 –

 

Reference Links

View Full User Guide: Chevrolet Blazer 2023 User Guide

Download Manuals: https://www.chevrolet.com/support/vehicle/manuals-guides