Jonathan Yarden Mar 25, 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: 2017
Underhood Fuse Block
The underhood fuse block is located in the engine compartment, on the driver’s side of the vehicle.
| Fuses | Usage |
| 1 | Electric Running Boards |
| 2 | Antilock Brake System Pump |
| 3 | Interior BEC LT1 |
| 4 | Passenger motorized safety belt |
| 5 | Suspension Leveling Compressor |
| 6 | 4WD Transfer Case Electronic Control |
| 7 | — |
| 8 | — |
| 9 | — |
| 10 | Electric Parking Brake |
| 11 | — |
| 12 | — |
| 13 | Interior BEC LT2 |
| 14 | Rear BEC 1 |
| 15 | — |
| 16 | — |
| 17 | Driver motorized safety belt |
| 18 | — |
| 19 | — |
| 20 | — |
| 21 | ALC Exhaust Solenoid |
| 23 | Integrated Chassis Control Module |
| 24 | Real Time Dampening |
| 25 | Fuel Pump Power Module |
| 26 | –/Battery Regulated Voltage Control |
| 27 | — |
| 28 | Upfitter 2 |
| 29 | Upfitter 2 Relay |
| 30 | Wiper |
| 31 | TIM |
| 31 | — |
| 33 | — |
| 34 | Reverse lamps |
| 35 | ABS valve |
| 36 | Trailer Brakes |
| 37 | Upfitter 3 Relay |
| 38 | — |
| 39 | Right trailer stoplamp/Turn signal lamp |
| 40 | Left trailer stoplamp/turn signal lamp |
| 41 | Trailer parking lamps |
| 42 | Right parking lamps |
| 43 | Left parking lamps |
| 44 | Upfitter 3 |
| 45 | Automatic Level Control Run/Crank |
| 46 | — |
| 47 | Upfitter 4 |
| 48 | Upfitter 4 Relay |
| 49 | Reverse Lamps |
| 50 | — |
| 51 | Parking Lamp Relay |
| 52 | — |
| 53 | — |
| 54 | — |
| 55 | — |
| 56 | — |
| 57 | — |
| 58 | — |
| 59 | Euro Trailer |
| 60 | A/C control |
| 61 | — |
| 62 | — |
| 63 | Upfitter 1 |
| 64 | — |
| 65 | — |
| 66 | — |
| 67 | Trailer Battery |
| 68 | — |
| 69 | RC Upfitter 3 and 4 |
| 70 | VBAT Upfitter 3 and 4 |
| 71 | — |
| 72 | Upfitter 1 Relay |
| 73 | — |
| 74 | Engine Control Module Ignition |
| 75 | Miscellaneous Ignition Spare |
| 76 | Transmission Ignition |
| 77 | RC Upfitter 1 and 2 |
| 78 | VBAT Upfitter 1 and 2 |
| 79 | — |
| 80 | — |
| 81 | — |
| 82 | — |
| 83 | Euro Trailer RC |
| 84 | Run/Crank Relay |
| 85 | — |
| 86 | — |
| 87 | Engine |
| 88 | Injector A – Odd |
| 89 | Injector B – Even |
| 90 | Oxygen Sensor B |
| 91 | Throttle Control |
| 92 | Engine Control Module Relay |
| 93 | Horn |
| 94 | Fog Lamps |
| 95 | High-Beam Headlamps |
| 96 | — |
| 97 | — |
| 98 | — |
| 99 | — |
| 100 | Oxygen Sensor A |
| 101 | Engine Control Module |
| 102 | Engine Control Module/Transmission Control Module |
| 103 | Auxiliary Interior Heater |
| 104 | Starter |
| 105 | — |
| 106 | — |
| 107 | Aero Shutter |
| 108 | — |
| 109 | Police Upfitter |
| 110 | — |
| 111 | — |
| 112 | Starter Relay |
| 113 | — |
| 114 | Front Windshield Washer |
| 115 | Rear Window Washer |
| 116 | Left cooling fan |
| 117 | Fuel pump prime |
| 118 | — |
| 119 | — |
| 120 | Fuel pump prime |
| 121 | Right HID headlamp |
| 122 | Left HID Headlamp |
| 123 | Right cooling fan |
Instrument Panel Fuse Block (Left)
The left instrument panel fuse block access door is on the driver side edge of the instrument panel.
| Fuses | Usage |
| 1 | — |
| 2 | — |
| 3 | — |
| 4 | Accessory Power Outlet 1 |
| 5 | Retained Accessory Power/Accessory |
| 6 | APO/BATT |
| 7 | Universal Garage Door Opener/Inside Rear View Mirror |
| 8 | SEO Retained Accessory Power |
| 9 | — |
| 10 | Body Control Module 3 |
| 11 | Body Control Module 5 |
| 12 | Steering Wheel Controls Backlighting |
| 13 | — |
| 14 | — |
| 15 | — |
| 16 | Discrete Logic Ignition Sensor |
| 17 | Video processing module |
| 18 | Mirror Window Module |
| 19 | Body Control Module 1 |
| 20 | Front Bolster (if equipped) |
| 21 | — |
| 22 | — |
| 23 | — |
| 24 | HVAC/Ignition |
| 25 | Instrument cluster/Ignition sensing diagnostic module/Ignition |
| 26 | Tilt Column/SEO, Tilt Column Lock 1/SEO |
| 27 | Data link connector/Driver seat module |
| 28 | Passive entry/Passive start/HVAC battery |
| 29 | Content theft deterrent |
| 30 | — |
| 31 | — |
| 32 | — |
| 33 | SEO/Automatic Level Control |
| 34 | Park Enable Electric Adjustable Pedal (if equipped) |
| 35 | — |
| 36 | Miscellaneous R/C |
| 37 | Heated Steering Wheel |
| 38 | Steering Column Lock 2 (if equipped) |
| 39 | Instrument Cluster Battery |
| 40 | — |
| 41 | — |
| 42 | Euro Trailer (if equipped) |
| 43 | Left Doors |
| 44 | Driver Power Seat |
| 45 | — |
| 46 | Right heated, cooled, or ventilated seat (if equipped) |
| 47 | Left heated, cooled, or ventilated seat (if equipped) |
| 48 | — |
| 49 | — |
| 50 | Accessory Power Outlet 2 |
| 51 | — |
| 52 | Retained Accessory Power Relay |
| 53 | Run/Crank Relay |
| 54 | — |
| 55 | — |
| 56 | — |
Instrument Panel Fuse Block (Right)
The right instrument panel fuse block access door is on the passenger side edge of the instrument panel.
| Number | Usage |
| 1 | — |
| 2 | — |
| 3 | — |
| 4 | Accessory Power Outlet 4 |
| 5 | — |
| 6 | — |
| 7 | — |
| 8 | — |
| 9 | — |
| 10 | — |
| 11 | — |
| 12 | Steering Wheel Controls |
| 13 | Body Control Module 8 |
| 14 | — |
| 15 | — |
| 16 | — |
| 17 | — |
| 18 | — |
| 19 | Body Control Module 4 |
| 20 | Rear Seat Entertainment |
| 21 | Sunroof |
| 22 | — |
| 23 | — |
| 24 | — |
| 25 | — |
| 26 | Infotainment/Airbag |
| 27 | –/RF window switch/Rain sensor |
| 28 | Obstacle Detection/USB |
| 29 | Radio |
| 30 | — |
| 31 | — |
| 32 | — |
| 33 | — |
| 34 | — |
| 35 | — |
| 36 | Special equipment option B2 |
| 37 | Special equipment option |
| 38 | Body Control Module 2 |
| 39 | A/C Inverter |
| 40 | — |
| 41 | — |
| 42 | — |
| 43 | — |
| 44 | Right Door Window Motor |
| 45 | Front Blower |
| 46 | Body Control Module 6 |
| 47 | Body Control Module 7 |
| 48 | Amplifier |
| 49 | Right Front Seat |
| 50 | Accessory Power Outlet 3 |
| 51 | — |
| 52 | Retained Accessory Power Relay |
| 53 | — |
| 54 | — |
| 55 | — |
| 56 | — |
Rear Compartment Fuse Block
The rear compartment fuse block is behind the access panel on the left side of the compartment.
| Item | Usage |
| 1 | Rear defogger relay |
| 2 | Left heated second row seat |
| 3 | Right heated second row seat |
| 4 | Heated Mirrors |
| 5 | Liftgate |
| 6 | Glass Breakage |
| 7 | Liftglass |
| 8 | Liftgate Module Logic |
| 9 | Rear Wiper |
| 10 | Rear HVAC blower |
| 11 | Second Row Seat |
| 12 | Liftgate module |
| 13 | Third row seat |
| 14 | Rear accessory power outlet |
| 15 | Rear defogger |
| 16 | Liftgate |
| 17 | Liftglass |
| 18 | Rear fog lamp (if equipped) |
| 19 | Rear Fog Lamp (if equipped) |
| 20 | Heated mirror |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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