Jonathan Yarden Mar 27, 2021 · 5 min. read
In this article you will find a description of fuses and relays Chevrolet,
with photos of block diagrams and their locations.
Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Year of production: 2018
Engine Compartment Fuse Block
The fuse block is located in the engine compartment on the driver side of the vehicle.
| Fuse | Usage |
| 1 | ABS motor |
| 2 | ABS module |
| 3 | Right trailer stoplamp/Turnlamp |
| 4 | â |
| 5 | â |
| 6 | Fuel system control module/Ignition |
| 7 | Body Control Module 5 |
| 8 | Body Control Module 7 |
| 9 | Body Control Module 4 |
| 10 | Instrument cluster |
| 11 | Trailer Wiring |
| 12 | â |
| 13 | Interior rear vision camera module |
| 14 | Windshield Washer |
| 16 | Horn |
| 17 | Transmission |
| 18 | A/C |
| 19 | Engine control module battery |
| 20 | Cutaway/Left stoplamp/Turnlamp |
| 21 | Left trailer stoplamp/Turnlamp |
| 22 | Cutaway/Right stoplamp/Turnlamp |
| 23 | â |
| 24 | Fuel Pump |
| 25 | Auxiliary Power Outlet |
| 26 | Body Control Module 3 |
| 27 | Special Equipment Option |
| 28 | Airbag |
| 29 | Steering Wheel Sensor |
| 30 | Engine control module Ignition |
| 31 | Transmission control module/Ignition |
| 32 | Transmission control module 1 battery/Engine control module battery power (gas 6 cyl) |
| 33 | Rear parking aid module |
| 34 | â |
| 35 | â |
| 36 | Fuel System Control Module Battery |
| 41 | Transmission control 2 module battery power |
| 42 | Trailer wiring |
| 43 | â |
| 44 | Starter solenoid |
| 45 | Engine control module/Powertrain |
| 46 | AC DC inverter |
| 47 | Cooling fan â low |
| 51 | Left high-beam headlamp |
| 52 | Right high-beam headlamp |
| 53 | Left low-beam headlamp |
| 54 | Right low-beam headlamp |
| 55 | Wipers |
| 56 | Canister Vent Solenoid |
| 58 | Body Control Module 2 |
| 59 | Body Control Module 1 |
| 61 | Engine oil solenoid |
| 62 | O2 sensor 2 |
| 63 | â |
| 64 | Mass Air Flow/Canister Vent |
| 65 |  Ignition/Injectors â odd |
| 66 | Daytime Running Lamps 2 |
| 67 | Daytime Running Lamps 1 |
| 68 | Auxiliary Stop Lamps |
| 69 | External power for trailer |
| 70 | Upfitter stoplamps |
| 71 | Fuel heater/Flex fuel sensor |
| 72 | Body Control Module 6 |
| 73 | Lighter/Data Link Connection |
| 74 | Front blower |
| 75 | V6 fuel injectors |
| 76 | â |
| 77 | O2 sensor 1 |
| 78 | Engine control module/Powertrain |
| 79 | Ignition/Injectors â even |
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| Relay | Usage |
| 15 | Run/Crank |
| 37 | â |
| 38 | Fuel Pump |
| 39 | Crank |
| 40 | A/C Compressor |
| 48 | â |
| 49 | Powertrain |
| 50 | â |
| 57 | Cooling fan â low |
| 60 | Fan Control |
Â
Auxiliary Fuse Block
This component is near the fuse block in the engine compartment.
| Fuses | Usage |
| MR-1 | Upfitter 1 |
| MR-2 | Upfitter 2 |
| MR-3 | Upfitter power control |
| MR Rel 1 | Upfitter 1 |
| MR Rel 2 | Upfitter 1 |
Mega Fuse Holder
| Fuses | Usage |
| 1 | Starter motor |
Floor Console Fuse Block
The floor console fuse block is located under the driver seat.
| Fuse | Usage |
| F1 | â |
| F2 | Steering Wheel Sensor |
| F3 | Auxiliary Parking Lamps |
| F4 | Front Park Lamps |
| F5 | Trailer Park Lamps |
| F6 | Upfitter/Parking lamps |
| F7 | Right Rear Park Lamp |
| F8 | Left Rear Park Lamp |
| F9 | Exterior rearview mirror switch |
| F10 | Airbag/Automatic occupant sensing |
| F11 | â |
| F12 | Door lock/unlock control upfitter (if equipped) |
| F13 | HVAC 2 |
| F14 | HVAC 1 |
| F15 | â |
| F16 | Upfitter 1 |
| F17 | Exterior rearview heated mirrors |
| F18 | Rear Window Defogger |
| F19 | Compass |
| F20 | Radio/Chime/ SiriusXM satellite radio |
| F21 | Remote Function Actuator/Tire Pressure Monitor |
| F22 | Ignition Switch/Discrete Logic Ignition Sensor |
| F23 | Instrument Cluster |
| F24 | â |
| F25 | HVAC control |
| F26 | Auxiliary/Trailer reverse lamps |
| F27 | Reverse lamps |
| F28 | Upfitter 2/Reading lamps |
| F29 | Rear blower |
| F30 | Upfitter/Courtesy Lamps |
| F31 | Front Door Lock |
| F32 | Rear Door Lock |
| F33 | Cargo Door Unlock |
| F34 | Passenger Door Unlock |
| F35 | Rear Passenger Door Unlock |
| F36 | Driver Door Unlock |
| F37 | Empty |
| F38 | â |
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| Relays | Usage |
| K1 | Run |
| K2 | â |
| K3 | Park Lamps |
| K4 | Upfitter 2 |
| K5 | Rear Defogger |
| K6 | Retained Accessory Power |
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| Circuit Breaker | Usage |
| CB1 | Power Seats |
| CB2 | Power Windows |
WARNING:Â Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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