Explore Chevrolet Tahoe fuse box diagrams in this comprehensive guide designed to help you understand the electrical layout of the latest full-size SUV generation. In this article, we cover the fifth-generation Chevrolet Tahoe (2021–2026) (Model Code: GMT1UC ) and provide fuse diagrams for 2021, 2022, 2023, 2024, 2025 and 2026 , along with the location of the fuse panels and the assignment of each fuse and relay , giving you a clear reference for diagnostics, maintenance, and repairs.
The right instrument panel fuse block access door is on the passenger side edge of the instrument panel. Pull off the cover to access the fuse block. A fuse puller is available on the right instrument panel end cap.
Lift the cover to access the fuse block.
The rear compartment fuse block is behind the access panel on the left side of the compartment. Pull the panel out by grabbing the finger access slot at the rear edge.
There are relays on the back of the fuse block. To access, press the tabs and remove the fuse block.
Assignment of the fuses in the instrument panel fuse cox
Fuse Data
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No. Description F1 Right Door F2 Left Door F3 Universal Garage Door Opener (UGDO)/ OnStar Hands-free Calling (OHC)/ Camera F4 Body Control Module 2 F5 Displays F6 Front Blower F8 Left Door Panel F10 Tilt/ Column Lock F11 USB/ Data Link Connector (DLC) F12 Central Gateway Module (CGM)/ Onstar F14 Right Door Panel F17 Steering Wheel Control F18 Active Vibration Module 1 F19 – F20 – F21 – F22 Heated Whee F23 – F24 – F25 Search Engine Optimization (SEO)/ UPFITTER F26 USB/ Search Engine Optimization (SEO) Retained Accessory Power (RAP) F27 Auxiliary Power Outlet (APO)/Retained Accessory Power F28 Spare F30 Sensing and Diagnostic Module/ Automatic Occupant Sensing F31 Body Control Module 3 F32 Center Stack Module (CSM)/ USB F33 Body Control Module 4 F34 Out of Park F40 – F41 – F42 Electric Park Brake Switch F43 Road Side Equipment F44 Active Vibration Module 2 F45 Radio Module F46 Body Control Module 1A F47 – F48 Telematics Control Module F49 Body Control Module 1 F50 Driver Monitoring System F51 – F52 – F53 – F54 Sunroof F55 Auxiliary Power Outlet 3 F56 Direct Current/ Direct Current Converter Battery 1 F57 Direct Current/ Direct Current Converter Battery 2 F58 Spare F59 –
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Assignment of the circuit breakers in the instrument panel fuse cox
Fuse Data
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No. Description CB1 Auxiliary Power Outlet 1 CB2 Auxiliary Power Outlet 2
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Assignment of the relays in the instrument panel fuse cox
Fuse Data
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No. Description K1 – K2 Retain Accessory Power/ Accessory 1 K4 Retain Accessory Power/ Accessory 2 K5 –
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Assignment of the fuses in the engine compartment fuse box
Fuse Data
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No. Description 1 – 2 – 3 – 4 – 6 Exterior Lighting Module 7 7 Exterior Lighting Module 4 8 – 9 Exterior Lighting Module 5 10 Exterior Lighting Module 6 11 Spare 12 – 13 Washer Front 14 Washer Rear 15 Rear Electrical Center 2 16 Power Sounder 17 Spare 19 DC/AC Inverter 20 IECR 2 21 – 22 IECL 2 24 Electronic Brake Control Module 25 Rear Electrical Center 1 26 Camera Wash 27 Horn 28 Headlamp Right 29 Headlamp Left 30 Exterior Lighting Module 3 31 Exterior Lighting Module 1 32 – 33 Not R/C 34 – 37 On Board Diagnostics (OBD) Body 38 MISC Body 39 Upfitter 40 MISC Instrument Panel (IP) 41 Trailer Parking Lamps 42 Right Taillamp 44 Trailer Tow 45 Secondary Axle Motor 46 Engine Control Module (ECM) Ignition 47 OBD Engine 48 – 49 Telematics Control Module 50 A/C Clutch 51 Transfer Case Control Module 52 Front Wiper 53 – 54 Left Taillamps 55 Trailer Back-up Lamp 56 Semi Active Damping System 57 Spare 58 Starter Motor 60 Active Fuel Management 1 61 Automatic Lamp Control (ALC) Main 62 Integrated Chassis Control Module/Canister Vent Solenoid/Diesel Exhaust Fluid 63 Trailer Brake 65 Auxiliary Underhood Electrical Center 66 Left Cool Fan Motor 67 Active Fuel Management 2 68 Automatic Lamp Control (ALC) Motor 69 Starter Pinion 71 Cool Fan Motor Lower 72 Right Cool Fan Motor/ Lower 73 Left Trailer Stop Turn Lamp 74 Trailer Interface Module 2 75 Diesel Exhaust Fluid Controller 76 ELEC RNG BDS 78 Engine Control Module 79 – 80 Cabin Cool Pump 17W 81 Right Trailer Stop Turn Lamp 82 Trailer Interface Module 1 83 Fuel Tank Zone Module 84 Trailer Battery 85 Engine 86 Engine Control Module 87 Injector B Even 88 O2 B Sensor 89 O2 A Sensor 90 Injector A Odd 91 Engine Control Module (ECM) Throttle Control 92 Cool Fan Clutch AERO Shutter
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Assignment of the relays in the engine compartment fuse box
Fuse Data
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No. Description 5 – 18 DC/AC Inverter 23 – 35 Park Lamp 36 Run/Crank 43 Secondary Axle Motor 59 A/C Clutch 64 Starter Motor 70 Starter Pinion 77 Powertrain
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Assignment of the fuses in the rear compartment fuse box
Fuse Data
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No. Description F1 Remote Function Actuator F2 Wireless Charging Module F3 Heated Seat Module Row 1 (Battery 1) F4 Memory Seat Module (MSM) Driver F5 – F6 – F7 Amplifier Auxiliary 2 F8 – F9 Search Engine Optimization Upfitter 2 F10 Motor Seatbelt Passenger F11 Power Folding Seat Row 2 F12 GBS F13 – F14 – F15 Heated Seat Module Row 1 (Battery 2) F16 Right Hand Cinch Latch F17 Memory Seat Module Passenger F18 Rear Wiper F19 Motor Seatbelt Driver F20 Rear Defogger F21 – F22 Rear HVAC Display Control F23 External Object Calculation Module F24 Amplifier Auxiliary 3 F25 OBS DET F26 Rear Drive Control Module F27 Amplifier Auxiliary 1 F28 Video Processing Module F29 – F30 – F31 Amplifier F32 – F33 Integrated Chassis Control Module F34 Heated Seat Module Row 2 F35 HFCR F36 Exterior Lighting Module F37 – F38 Power Slide Console F39 – F40 – F41 – F42 – F43 Universal Park Assist F44 – F45 Adaptive Forward Lighting/ Automatic Headlamp Leveling F46 Rear HVAC Blower Motor F47 Left Hand Cinch Latch F48 Power Seat Recline Module F49 Lift Glass F50 Driver Power Seat F51 Power Liftgate Module F52 Passenger Power Seat
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Assignment of the relays in the rear compartment fuse box
Fuse Data
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No. Description K53 – K54 – K55 L/GLASS
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