Explore Chevrolet Tahoe fuse box diagrams in this practical guide that walks you through the electrical layout of the fourth-generation full-size SUV. Here we focus on the fourth-generation Chevrolet Tahoe (2015–2020) (Model Code: K2UC ) and provide fuse diagrams for 2015, 2016, 2017, 2018, 2019 and 2020 , along with the location of the fuse panels and the assignment of each fuse and relay , giving you a dependable reference for troubleshooting and maintenance.
It is located on the driver’s side of the instrument panel, behind the cover.
Assignment of the fuses in the instrument panel fuse box (Driver’s Side)
Fuse Data
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№ Usage 1 Not used 2 Not used 3 Not used 4 Accessory Power Outlet 1 5 Retained Accessory Power/Accessory 6 Accessory power outlet from battery power 7 2015-2018: Universal Garage Door Opener/Inside 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 2015-2018: 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 2015-2016: Heater, Ventilation and Air Conditioning Ignition/Heater, Ventilation and Air Conditioning Auxiliary. 25 Instrument cluster/Ignition sensing diagnostic module/Ignition 26 2015-2018: Tilt Column/SEO, Tilt Column Lock 1/SEO. 27 Data link connector/Driver seat module 28 2015-2018: Passive Entry/Passive Start/Heater, Ventilation and Air Conditioning Battery. 29 Content theft deterrent 30 Not used 31 Not used 32 Not used 33 2015-2017: SEO/Automatic Level Control. 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 Relay 53 Run/Crank Relay 54 Not used 55 Not used 56 Not used
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It is located on the passenger side of the instrument panel, behind the cover.
Assignment of the fuses in the instrument panel fuse box (Passenger’s Side)
Fuse Data
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№ Usage 1 Not used 2 Not used 3 Not used 4 Accessory Power Outlet 4 5 Not used 6 Not used 7 Not used 8 Not used / 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/beacon upffiter 22 Not used 23 Not used 24 Not used 25 Not used 26 Infotainment/Airbag 27 Spare/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 A/C 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
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It is located in the engine compartment on the driver’s side.
Assignment of the fuses and relay in the engine compartment
Fuse Data
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№ Usage 1 2015-2019: 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 Not used 8 Not used 9 Fuel pump relay / Not Used 10 Electric Parking Brake / Not Used 11 Not used 12 Not used 13 Interior BEC LT2 14 Rear BEC 1 15 Not used 16 Not used 17 Driver motorized safety belt 18 Not used 19 Not used 20 Not used 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 Not used 28 Upfitter 2 29 Upfitter 2 Relay 30 Wiper 31 Trailer interface module (TIM) 32 Not used 33 Not used 34 Reverse lamps 35 Antilock brake system valve 36 Trailer Brakes 37 Upfitter 3 Relay 38 Not used 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 Not used 47 Upfitter 4 48 Upfitter 4 Relay 49 Reverse Lamps 50 Not used 51 Parking Lamp Relay 52 Not used 53 Not used 54 Not used 55 Not used 56 Not used 57 Not used 58 Not used 59 Euro Trailer 60 A/C control 61 Not used 62 Not used 63 Upfitter 1 64 Not used 65 Not used 66 Not used 67 Trailer Battery 68 Not used / Secondary fuel pump 69 RC Upfitter 3 and 4 70 VBAT Upfitter 3 and 4 71 Not used 72 Upfitter 1 Relay 73 Not used 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 Not used 80 Not used 81 Not used 82 Not used 83 Euro Trailer / RC 84 Run/Crank Relay 85 Not used 86 Not used 87 Engine / MAF/IAT/Humidity/ TIAP sensor 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 Not used 97 Not used 98 Not used 99 Not used 100 Oxygen Sensor A 101 Engine Control Module 102 Engine Control Module/Transmission Control Module 103 Auxiliary Interior Heater 104 Starter 105 Not used 106 Not used 107 AeroShutter 108 Not used 109 Police Upfitter 110 Not used 111 Not used 112 Starter Relay 113 Not used 114 Front Windshield Washer 115 Rear Window Washer 116 Left cooling fan 117 Fuel pump prime 118 Not used 119 Not used 120 Fuel pump prime relay 121 Right HID headlamp 122 Left HID Headlamp 123 Right cooling fan
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It is located in the left side of the luggage compartment behind the cover.
Assignment of the fuses in the luggage compartment
Fuse Data
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№ Usage 2 Left heated second row seat / Not used 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 Heater, Ventilation and Air Conditioning Blower 11 Second Row Seat 12 Liftgate module 13 Third row seat 14 Rear accessory power outlet 15 Rear defogger
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Assignment of the relays in the luggage compartment
Fuse Data
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No. Description 1 Rear defogger 16 Liftgate 17 Liftglass 18 Rear fog lamp (if equipped) 19 Rear Fog Lamp (if equipped) 20 Heated mirror
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