Chevrolet Tahoe 2018 Fuse Box Info
Passenger compartment fuse box location:
The left instrument panel fuse box is located on the driver side edge of the instrument panel.
The right instrument panel fuse box is located on the passenger side edge of the instrument panel.
Engine compartment fuse box location:
Luggage compartment fuse box location:
Fuse Box Diagram | Layout
Passenger compartment fuse box (Left):
| Fuse/Relay N° | Functions |
| 1 | Not Used |
| 2 | Not Used |
| 3 | Not Used |
| 4 | Accessory Power Outlet 1 |
| 5 | Retained Accessory Power |
| 6 | APO/BATT |
| 7 | Universal Garage Door Opener/Interior Rear View Mirror |
| 8 | SEO Retained Accessory Power |
| 9 | Not Used |
| 10 | Body Control Module 3 |
| 11 | Body Control Module 5 |
| 12 | Steering Wheel Controls Backlighting |
| 13 | Not Used |
| 14 | Not Used |
| 15 | Not Used |
| 16 | Discrete Logic Ignition Sensor |
| 17 | Video processing module |
| 18 | Mirror Window Module |
| 19 | Body Control Module 1 |
| 20 | Front Bolster (if equipped) |
| 21 | Not Used |
| 22 | Not Used |
| 23 | Not Used |
| 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/Heater, Ventilation and Air Conditioning Battery |
| 29 | Content theft deterrent |
| 30 | Not Used |
| 31 | Not Used |
| 32 | Not Used |
| 33 | SEO/Automatic level control/Left heated second row seat |
| 34 | Park Enable Electric Adjustable Pedal (if equipped) |
| 35 | Not Used |
| 36 | Miscellaneous/Run crank |
| 37 | Heated Steering Wheel |
| 38 | Steering Column Lock 2 (if equipped) |
| 39 | Instrument Cluster Battery |
| 40 | Not Used |
| 41 | Not Used |
| 42 | Euro Trailer (if equipped) |
| 43 | Left Doors |
| 44 | Driver Power Seat |
| 45 | Not Used |
| 46 | Right heated, cooled, or ventilated seat (if equipped) |
| 47 | Left heated, cooled, or ventilated seat (if equipped) |
| 48 | Not Used |
| 49 | Not Used |
| 50 | Accessory Power Outlet 2 |
| 51 | Not Used |
| 52 | Retained Accessory Power/Accessory Relay |
| 53 | Run/Crank Relay |
| 54 | Not Used |
| 55 | Not Used |
| 56 | Not Used |
Passenger compartment fuse box (Right):
| Fuse/Relay N° | Functions |
| 1 | Not Used |
| 2 | Not Used |
| 3 | Not Used |
| 4 | Accessory Power Outlet 4 |
| 5 | Not Used |
| 6 | Not Used |
| 7 | Not Used |
| 8 | Glove Box |
| 9 | Not Used |
| 10 | Not Used |
| 11 | Not Used |
| 12 | Steering Wheel Controls |
| 13 | Body Control Module 8 |
| 14 | Not Used |
| 15 | Not Used |
| 16 | Not Used |
| 17 | Not Used |
| 18 | Not Used |
| 19 | Body Control Module 4 |
| 20 | Rear Seat Entertainment |
| 21 | Sunroof |
| 22 | Not Used |
| 23 | Not Used |
| 24 | Not Used |
| 25 | Not Used |
| 26 | Infotainment/Airbag |
| 27 | –/RF window switch/ Rain sensor |
| 28 | Obstacle detection/USB |
| 29 | Radio |
| 30 | Not Used |
| 31 | Not Used |
| 32 | Not Used |
| 33 | Not Used |
| 34 | Not Used |
| 35 | Not Used |
| 36 | Special equipment option B2 |
| 37 | Special equipment option |
| 38 | Body Control Module 2 |
| 39 | DC to AC inverter |
| 40 | Not Used |
| 41 | Not Used |
| 42 | Not Used |
| 43 | Not Used |
| 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 | Not Used |
| 52 | Retained accessory power relay |
| 53 | Not Used |
| 54 | Not Used |
| 55 | Not Used |
| 56 | Not Used |
Engine compartment fuse box:
| Fuse/Relay N° | Functions |
| 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 | Fuel pump |
| 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 | Automatic headlamp leveling/ Exhaust solenoid |
| 22 | Fuel pump |
| 23 | Integrated Chassis Control Module |
| 24 | Real Time Dampening |
| 25 | Fuel Pump Power Module |
| 26 | Active Hydraulic Assist/ Battery regulated voltage control |
| 27 | - |
| 28 | Upfitter 2 |
| 29 | Upfitter 2 Relay |
| 30 | Wiper |
| 31 | Trailer interface module |
| 32 | - |
| 33 | - |
| 34 | Reverse lamps |
| 35 | Antilock Brake System 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 | Air Conditioning Control |
| 61 | - |
| 62 | - |
| 63 | Upfitter 1 |
| 64 | Secondary fuel pump |
| 65 | - |
| 66 | - |
| 67 | Trailer Battery |
| 68 | Secondary fuel pump |
| 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/– |
| 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 | MAF/IAT/Humidity/ TIAP sensor |
| 88 | Injector A – Odd |
| 89 | Injector B – Even |
| 90 | O2 sensor B |
| 91 | Throttle Control |
| 92 | Engine Control Module Relay |
| 93 | Horn |
| 94 | Fog Lamps |
| 95 | High-Beam Headlamps |
| 96 | - |
| 97 | - |
| 98 | - |
| 99 | - |
| 100 | O2 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 | Cooling Fan Left |
| 117 | Fuel pump prime |
| 118 | - |
| 119 | - |
| 120 | Fuel pump prime |
| 121 | Right HID Headlamp |
| 122 | Left HID Headlamp |
| 123 | Cooling Fan Right |
Luggage compartment fuse box:
| Fuse/Relay N° | Functions |
| 1 | Rear defogger relay |
| 2 | - |
| 3 | Right heated second row sea |
| 4 | Heated Mirrors |
| 5 | Liftgate |
| 6 | Glass Breakage |
| 7 | Liftglass |
| 8 | Liftgate Module Logic |
| 9 | Rear Wiper |
| 10 | Rear Heater, Ventilation and Air Conditioning Blower |
| 11 | Second Row Seat |
| 12 | Liftgate Module |
| 13 | Third Row Seat |
| 14 | Rear Accessory Power Outlet |
| 15 | Rear window defogger |
| 16 | Liftgate |
| 17 | Liftglass |
| 18 | Rear Fog Lamp |
| 19 | Rear Fog Lamp (if equipped) |
| 20 | Heated Mirrors |
