Chevrolet Tahoe fuse box diagrams: complete guides from 2000 to today

BySerge Barrett

The Chevrolet Tahoe stands out as a powerhouse full-size SUV, blending toughness with family-friendly features across its generations. From hauling trailers to navigating city streets, its electrical system is key to everything from infotainment to safety aids. When glitches hit—like dead headlights or unresponsive climate controls—the fuse boxes are your starting point. These protective devices safeguard circuits from overloads, and knowing their layouts can turn a frustrating downtime into a quick DIY win. Spanning from the second generation in 2000 to the latest models, Tahoe’s fuse configurations have grown more complex with added tech like advanced driver assists and hybrid options. This in-depth guide pulls together precise diagrams and assignments from reliable sources, focusing on interior, underhood, and rear blocks to help you troubleshoot effectively and keep your Tahoe adventure-ready.

How fuse systems work in Chevrolet Tahoe

Fuses in the Tahoe are simple yet vital: they melt under excessive current to protect wiring and components. Rated in amps and color-coded—red for 10A, pink for 30A—they’re easy to spot and replace. Relays, often integrated, handle switching for power-hungry items like fans or wipers. Locations shift by era: early models keep it basic with dash and engine bay spots, while newer ones add passenger-side and cargo-area panels for expanded electronics. Always pull fuses with a tool to avoid shorts, and test with a multimeter for continuity. Persistent blowing signals deeper woes like chafed wires or failing modules. Pro insight: Scan for DTCs alongside fuse checks, as modern Tahoes tie electrical faults to onboard diagnostics for a fuller picture.

2000-2006 Chevrolet Tahoe fuse boxes

Second-generation Tahoes emphasize durability, with fuse setups supporting robust 4WD and towing. Main blocks include the instrument panel for cabin functions, a center utility for add-ons, and underhood for engine essentials. Designs are consistent across these years, with minor tweaks for diesel variants.

Instrument panel fuse block

Tucked on the driver’s side lower dash, access by pulling the cover. Handles locks, lights, and accessories.

  • Climate Control System: 10A
  • Ignition, Power Seats: 10A
  • Anti-Lock Brake System: 10A
  • Climate Control System: 25A
  • PRND321 Display, Odometer, PCM: 10A
  • Cruise Control, Instrument Cluster: 10A
  • Four-Wheel Drive System, Auxiliary Battery: 15A
  • Exterior Lamps, Turn Signals, Hazard Lamps: 20A
  • Rear Window Wiper: 15A
  • Windshield Wipers: 25A
  • Special Equipment Option, Ignition, OnStar: 10A
  • Interior Lamps: 10A
  • Ignition, Instrument Panel: 10A
  • Special Equipment Option Accessory, Cellular Telephone: 10A
  • Starting System: 10A
  • Air Bag: 15A
  • Power Mirrors, Power Door Locks: 3A
  • Power Door Locks: 20A
  • Power Door Locks: 15A
  • Interior Lamps: 10A
  • Power Door Locks: 15A
  • Audio System, OnStar: 10A
  • Rear Power Windows, Sunroof, Radio, OnStar: 10A
  • Power Seat Circuit Breaker: ATO
  • Power Window Circuit Breaker: ATO
  • Retained Accessory Power Relay: Connector
  • Power Door Lock Relay: Connector
  • Power Door Lock Relay: R1
  • Power Door Lock Relay: R2
  • Retained Accessory Power Relay: R3
  • Power Door Lock Relay: R4
  • Special Equipment Option: Connector 1
  • Trailer Brake Wiring: Connector 2
  • Upfitter: Connector 3
  • Heated Seats: Connector 6
  • Power Seats: Connector 7
  • Headliner Wiring: Connector 10
  • Cellular Telephone Wiring: Connector 12
  • Parking Lamps: R1
  • Puddle Lamps: R2
  • Courtesy Lamps: R3
  • Interior Lights Feed: R4

Center instrument panel fuse block

Under the dash left of the steering column, focuses on optional equipment and interior add-ons. No full fuse list, but includes harness connectors for customization.

  • Special Equipment Option: Connector
  • Trailer Brake Wiring: Connector
  • Upfitter: Connector
  • Heated Seats: Connector
  • Power Seats: Connector
  • Headliner Wiring: Connector
  • Cellular Telephone Wiring: Connector
  • Parking Lamps: Relay
  • Puddle Lamps: Relay
  • Courtesy Lamps: Relay
  • Interior Lights Feed: Relay

Underhood fuse block

On the driver’s side engine bay, covers core powertrain and exterior systems.

  • Accessory Power/Trailer Wiring Feed/Load Leveling: 40A MAXI
  • Anti-Lock Brakes: 60A MAXI
  • Ignition Switch: 40A MAXI
  • A.I.R. System: 30A MAXI
  • Retained Accessory Power, Power Mirrors, Power Door Locks, Power Seat(s): 50A MAXI
  • Ignition Switch: 50A MAXI
  • Retained Accessory Power/Rear Power Windows, Sunroof, Radio: 50A MAXI
  • Accessory Power/Trailer Wiring Brake Feed: 30A MAXI
  • Right Turn Signal Trailer Wiring: 10A MINI
  • Left Turn Signal Trailer Wiring: 10A MINI
  • Ignition, Fuel Controls (Gas): 15A MINI
  • Ignition, Fuel Controls (Relay, Diesel): 25A MINI
  • Parking Lamps: 30A MINI
  • Climate Control System: 30A MINI
  • Exterior Lamps, Stoplamps: 20A MINI
  • PCM (ECMI, Gas): 10A MINI
  • PCM (ECMRPV, Diesel): 15A MINI
  • Center High Mounted Stoplamp: 10A MINI
  • Stoplamps, Cruise Control: 10A MINI
  • Backup Lamps Trailer Wiring: 10A MINI
  • Fuel Controls, Ignition: 15A MINI
  • Rear HVAC: 30A MINI
  • Vehicle Backup Lamps: 15A MINI
  • Engine Controls, Canister Purge, Fuel System: 10A MINI
  • Electronic Throttle Control: 15A MINI
  • A/C Compressor Relay, Rear Window Defogger, Daytime Running Lamps, A.I.R. System: 10A MINI
  • Backup Lamps, Automatic Transmission Shift Lock Control System: 25A MINI
  • Automatic Transfer Case: 20A MINI
  • Autoride (Real Time Damping): 30A MINI
  • Right Rear Parking Lamps: 10A MINI
  • PCM: 20A MINI
  • Oxygen Sensors (Gas) / Fuel Ht (Diesel): 15A MINI
  • Oxygen Sensors (Gas): 15A MINI
  • ECMI (Diesel): 10A MINI
  • Left Rear Parking Lamps: 10A MINI
  • Rear Window Defogger, Heated Mirrors: 30A MINI
  • Parking Lamps Trailer Wiring: 15A MINI
  • Right Headlamps: 15A MINI
  • Heated Mirrors: 10A MINI
  • Left Headlamps: 15A MINI
  • Air Conditioning: 10A MINI
  • Cigarette Lighter, Auxiliary Power Outlets: 20A MINI
  • Special Equipment Option Power, Power Seats, Aux Roof Mnt Lamp: 30A MINI
  • Special Equipment Option Power, Aux Roof Mnt Lamp, Cell Phone, OnStar: 15A MINI
  • Daytime Running Lamps: 10A MINI
  • Fog Lamps: 15A MINI
  • Audio System, Instrument Cluster, Climate Control System: 15A MINI
  • Cigarette Lighter, Auxiliary Power Outlets: 15A MINI
  • Right Turn Signals: 10A MINI
  • Automatic Transmission Shift Lock Control System: 10A MINI
  • Left Turn Signals: 10A MINI
  • Front Parking Lamps, Sidemarker Lamps: 10A MINI
  • Windshield Washer Pump: 15A MINI
  • Ignition Switch, Fuel Pump, PRND321 Display, Crank: 20A MINI
  • Radio Amplifier: 25A MINI
  • Exterior Lamps, Hazard Lamps: 20A MINI
  • EXP LPS: 10A MINI
  • Horn: 15A MINI
  • Interior Lamps: 15A MINI
  • Rear Wipers: 25A MINI
  • Body Control Module, Remote Keyless Entry, Headlamps: 10A MINI
  • IGN 1: Relay
  • STARTER: Relay R2
  • RR DEFOG: Relay R3
  • F/PMP: Relay R4
  • HDLP: Relay R5
  • DRL: Relay R6
  • A/C: Relay R7
  • FOG LP: Relay R8
  • HORN: Relay R9

2007-2014 Chevrolet Tahoe fuse boxes

Third-generation models ramp up luxury with more electronic controls, adding hybrid variants. Fuse blocks cover instrument panel for interior, center for upfitters, and engine compartment for powertrain, plus an auxiliary for hybrids.

Instrument panel fuse block

On the driver’s side dash behind a cover, manages doors, lights, and climate.

  • Rear Seats: №1
  • Rear Accessory Power Outlet: №2
  • Steering Wheel Controls Backlight: №3
  • Driver Door Module: №4
  • Dome Lamps, Driver’s Side Turn Signal: №5
  • Driver’s Side Turn Signal, Stoplamp: №6
  • Instrument Panel Back Lighting: №7
  • Passenger’s Side Turn Signal, Stoplamp: №8
  • Body Control Module (2007) / Passenger Door Module, Universal Home Remote System (2008) / Passenger Door Module, Driver Unlock (2009-2010) / Passenger Door Lock 2 (Unlock Feature) (2011-2014): №9
  • Power Door Lock 2 (Unlock Feature): №10
  • Power Door Lock 2 (Lock Feature): №11
  • Stoplamps, Center-High Mounted Stoplamp: №12
  • Rear Climate Controls: №13
  • Power Mirror (2008-2014): №14
  • Passenger Door Module, Universal Home Remote System (2007) / Body Control Module (BCM) (2008-2014): №15
  • Accessory Power Outlets: №16
  • Interior Lamps: №17
  • Power Door Lock 1 (Unlock Feature): №18
  • Rear Seat Entertainment (2008-2014): №19
  • Ultrasonic Rear Parking Assist, Power Liftgate: №20
  • Power Door Lock 1 (Lock Feature): №21
  • Driver Information Center (DIC) (2008-2014): №22
  • Rear Wiper: №23
  • Not used (2007) / Cooled Seats (2008-2014): №24
  • Driver Seat Module, Remote Keyless Entry System: №25
  • Driver Power Door Lock (Unlock Feature): №26
  • Driver Side Power Window Circuit Breaker: LT DR (Circuit Breaker)
  • Driver’s Door Harness Connection: LT DR (Harness Connector)
  • Harness Connector: BODY (multiple)

Center instrument panel fuse block

Underneath the instrument panel to the left of the steering column, supports special equipment and seats.

  • Body Harness Connector 2: BODY 2
  • Body Harness Connector 1: BODY 1
  • Body Harness Connector 3: BODY 3
  • Headliner Harness Connector 3: HEADLINER 3
  • Headliner Harness Connector 2: HEADLINER 2
  • Headliner Harness Connector 1: HEADLINER 1
  • Brake Clutch Harness Connector: BRAKE CLUTCH
  • Special Equipment Option Upfitter Harness Connector: SEO/UPFITTER
  • Passenger’s Side Power Window Circuit Breaker: CB1
  • Passenger’s Seat Circuit Breaker: CB2
  • Driver’s Seat Circuit Breaker: CB3
  • Rear Sliding Window: CB4

Engine compartment fuse block

In the engine bay, oversees lighting, sensors, and brakes. Assignments vary slightly by year.

  • Not Used (2007) / Right Trailer Stop/Turn Lamp (2008-2014): №1
  • Electronic Stability Suspension Control, Automatic Level Control Exhaust: №2
  • Left Trailer Stop/Turn Lamp: №3
  • Engine Controls: №4
  • Engine Control Module, Throttle Control: №5
  • Right Trailer Stop/Turn Lamp (2007) / Trailer Brake Controller / Right Trailer Stop/Turn Lamp (2008-2014): №6
  • Front Washer: №7
  • Oxygen Sensors: №8
  • Anti-lock Brakes System 2: №9
  • Trailer Back-up Lamps: №10
  • Driver’s Side Low-Beam Headlamp: №11
  • Engine Control Module (Battery): №12
  • Fuel Injectors, Ignition Coils (Right Side): №13
  • Transmission Control Module (Battery): №14
  • Vehicle Back-up Lamps: №15
  • Passenger’s Side Low-Beam Headlamp: №16
  • Air Conditioning Compressor: №17
  • Oxygen Sensors: №18
  • Transmission Controls (Ignition): №19
  • Fuel Pump: №20
  • Not Used (2007) / Fuel System Control Module (2008-2014): №21
  • Rear Washer (2007) / Headlamp Washer (2008-2014): №22
  • Fuel Injectors, Ignition Coils (Left Side) (2007) / Rear Windshield Washer (2008-2014): №23
  • Trailer Park Lamps (2007) / Fuel Injectors, Ignition Coils (Left Side) (2008-2014): №24
  • Driver’s Side Park Lamps (2007) / Trailer Park Lamps (2008-2014): №25
  • Passenger’s Side Park Lamps (2007) / Driver’s Side Park Lamps (2008-2014): №26
  • Fog Lamps: №27
  • Horn: №28
  • Passenger’s Side High-Beam Headlamp: №29
  • Daytime Running Lamps: №30
  • Driver’s Side High-Beam Headlamp: №31
  • Not Used (2007) / Daytime Running Lamps (DRL) (If Equipped) (2008-2014): №32
  • Sunroof, Emergency Roof Lamp (2007) / Daytime Running Lamps 2 (If Equipped) (2008-2014): №33
  • Key Ignition System, Theft Deterrent System (2007) / Sunroof (2008-2014): №34
  • Windshield Wiper (2007) / Key Ignition System, Theft Deterrent System (2008-2014): №35
  • SEO B2 Upfitter Usage (Battery) (2007) / Windshield Wiper (2008-2014): №36
  • Electric Adjustable Pedals: №37
  • Climate Controls (Battery): №38
  • Airbag System (Ignition): №39
  • Amplifier: №40
  • Audio System: №41
  • Four-Wheel Drive (2007) / Miscellaneous (Ignition), Cruise Control (2008-2014): №42
  • Miscellaneous (Ignition), Rear Vision Camera, Cruise Control (2007) / Liftgate Release (2008-2014): №43
  • Liftgate Release (2007) / Airbag System (Battery) (2008-2014): №44
  • OnStar, Rear Seat Entertainment Display (2007) / Instrument Panel Cluster (2008-2014): №45
  • Instrument Panel Cluster (2007) / Not Used (2008-2014): №46
  • Not Used: №47
  • Not Used (2007) / Auxiliary Climate Control (Ignition), Compass-Temperature Mirror (2008) / Auxiliary Climate Control (Ignition) (2009-2014): №48
  • Auxiliary Climate Control (Ignition), Compass-Temperature Mirror (2007) / Center High-Mounted Stoplamp (CHMSL) (2009-2014): №49
  • Rear Defogger: №50
  • Airbag System (Battery) (2007) / Heated Mirrors (2008-2014): №51
  • SEO B1 Upfitter Usage (Battery): №52
  • Cigarette Lighter, Auxiliary Power Outlet: №53
  • Automatic Level Control Compressor Relay, SEO Upfitter Usage (2007-2008) / Automatic Level Control Compressor Relay (2009-2014): №54
  • Climate Controls (Ignition): №55
  • Engine Control Module, Secondary Fuel Pump (Ignition): №56
  • Cooling Fan 1: №57-60 (varies by year)
  • Automatic Level Control Compressor: №58-61 (varies)
  • Heavy Duty Antilock Brake System: №59-62 (varies)
  • Cooling Fan 2: №60-63 (varies)
  • Anti-lock Brake System 1: №61-64 (varies)
  • Starter: №62-65 (varies)
  • Stud 2 (Trailer Brakes): №63-66 (varies)
  • Left Bussed Electrical Center 1: №64-67 (varies)
  • Electric Running Boards: №65-68 (varies)
  • Heated Windshield Washer System: №66-69 (varies)
  • Four-Wheel Drive System (2007-2008) / Transfer Case (2009-2014): №67-70 (varies)
  • Stud 1 (Trailer Connector Battery Power): №68-71 (varies)
  • Mid-Bussed Electrical Center 1: №69-72 (varies)
  • Climate Control Blower: №70-73 (varies)
  • Power Liftgate Module: №71-74 (varies)
  • Left Bussed Electrical Center 2: №72-75 (varies)
  • Cooling Fan High Speed: FAN HI (Relay)
  • Cooling Fan Low Speed: FAN LO (Relay)
  • Not Used: ENG EXH VLV (Relay)
  • Cooling Fan Control: FAN CNTRL (Relay)
  • Low-Beam Headlamp: HDLP LO/HID (Relay)
  • Air Conditioning Compressor: FOG LAMP (Relay)
  • Starter: STRTR (Relay)
  • Powertrain: PWR/TRN (Relay)
  • Fuel Pump: FUEL PMP (Relay)
  • Parking Lamps: PRK LAMP (Relay)
  • Rear Defogger: REAR DEFOG (Relay)
  • Switched Power: RUN/CRANK (Relay)

Auxiliary engine compartment fuse block (hybrid models)

Near the front in the engine bay, dedicated to hybrid-specific cooling and controls.

  • ACPO: №1
  • BECM FAN: №2
  • ACCM: №3
  • CAB HTR PMP: №4
  • EMPTY: №5
  • COOL PUMP: №6
  • EPS: №7
  • Drive Motor/Generator Control Module 1: №8
  • Drive Motor/Generator Control Module 2: №9
  • BECM: №10
  • Cooling Fan 1: FAN 1 (J-Case)
  • Auxiliary Transmission Fluid Pump: TRANS PUMP (J-Case)
  • Cooling Fan 2: FAN 2 (J-Case)
  • Cab Heater Pump: CAB HTR PMP (J-Case)
  • Cooling Fan Low Speed Relay: FAN LOW
  • Cooling Fan Mid 1: FAN MID 1
  • Cooling Fan High Speed Relay: FAN HI
  • Cooling Fan Mid 2: FAN MID 2
  • Cooling Fan Control: FAN CNTRL

2015-2020 Chevrolet Tahoe fuse boxes

Fourth-generation Tahoes introduce more safety tech, with fuses split across engine compartment for power, left/right instrument panels for cabin, and rear for cargo features.

Engine compartment fuse block

Driver’s side engine bay, under a lift cover, controls lighting, brakes, and cooling.

  • Electric Running Boards: 1 (FMM/MCase)
  • Antilock Brake System Pump: 2 (FMX/JCase)
  • Interior BEC LT1: 3 (FMX/JCase)
  • MBS Passenger: 4 (FMX/JCase)
  • Suspension Leveling Compressor: 5 (FMX/JCase)
  • 4WD Transfer Case Electronic Control: 6 (FMX/JCase)
  • Electric Parking Brake: 10 (FMX/JCase)
  • Interior BEC LT2: 13 (FMX/JCase)
  • Rear BEC 1: 14 (FMX/JCase)
  • MBS Driver: 17 (FMX/JCase)
  • ALC Exhaust Solenoid: 21 (MINI)
  • Integrated Chassis Control Module: 23 (MINI)
  • Real Time Dampening: 24 (MINI)
  • Fuel Pump Power Module: 25 (MINI)
  • Spare/Battery Regulated Voltage Control: 26 (MICRO3)
  • Upfitter 2: 28 (MINI)
  • Wiper: 30 (MINI)
  • TIM: 31 (MINI)
  • Back-up Lamps: 34 (MINI)
  • Antilock Brake System Valve: 35 (MINI)
  • Trailer Brakes: 36 (FMM/MCase)
  • Trailer Stop/Turn Right: 39 (FMM/MCase)
  • Trailer Stop/Turn Left: 40 (FMM/MCase)
  • Trailer Park Lamps: 41 (FMM/MCase)
  • Right Parking Lamps: 42 (MINI)
  • Left Parking Lamps: 43 (MINI)
  • Upfitter 3: 44 (MINI)
  • Automatic Level Control Run/Crank: 45 (MICRO3)
  • Upfitter 4: 47 (MINI)
  • Reverse Lamps: 49 (FMM/MCase)
  • Euro Trailer: 59 (MINI)
  • Air Conditioning Control: 60 (MINI)
  • Upfitter 1: 63 (MINI)
  • Trailer Battery: 67 (FMM/MCase)
  • RC Upfitter 3 and 4: 69 (MINI)
  • VBAT Upfitter 3 and 4: 70 (MINI)
  • Engine Control Module Ignition: 74 (MINI)
  • Miscellaneous Ignition Spare: 75 (MINI)
  • Transmission Ignition: 76 (MINI)
  • RC Upfitter 1 and 2: 77 (MINI)
  • VBAT Upfitter 1 and 2: 78 (MINI)
  • Euro Trailer RC: 83 (MICRO3)
  • Engine: 87 (MINI)
  • Injector A – Odd: 88 (MINI)
  • Injector B – Even: 89 (MINI)
  • Oxygen Sensor B: 90 (MINI)
  • Throttle Control: 91 (MINI)
  • Horn: 93 (MINI)
  • Fog Lamps: 94 (MINI)
  • High-Beam Headlamps: 95 (MINI)
  • Oxygen Sensor A: 100 (MINI)
  • Engine Control Module: 101 (MINI)
  • Engine Control Module/Transmission Control Module: 102 (MICRO3)
  • Auxiliary Interior Heater: 103 (MINI)
  • Starter: 104 (FMX/JCase)
  • Aero Shutter: 107 (MINI)
  • Police Upfitter: 109 (MINI)
  • Front Windshield Washer: 114 (MINI)
  • Rear Window Washer: 115 (MINI)
  • Cooling Fan Left: 116 (FMX/JCase)
  • Right HID Headlamp: 121 (MINI)
  • Left HID Headlamp: 122 (MINI)
  • Cooling Fan Right: 123 (FMX/JCase)
  • Upfitter 2 Relay: 29 (Relay)
  • Upfitter 3 Relay: 37 (Relay)
  • Upfitter 4 Relay: 48 (Relay)
  • Parking Lamp Relay: 51 (Relay)
  • Upfitter 1 Relay: 72 (Relay)
  • Run/Crank Relay: 84 (Relay)
  • Engine Control Module Relay: 92 (Relay)
  • Starter Relay: 112 (Relay)

Instrument panel fuse block (left)

On the driver’s side dash edge, behind cover, for accessories and modules.

  • Accessory Power Outlet 1: 4 (FMM/MCase, 20A)
  • Retained Accessory Power/Accessory: 5 (FMX/JCase, 20A)
  • APO/BATT: 6 (FMX/JCase, 20A)
  • Universal Garage Door Opener/Inside Rear View Mirror: 7 (MICRO2, 5A)
  • SEO Retained Accessory Power: 8 (MICRO2, 10A)
  • Body Control Module 3: 10 (MICRO2, 10A)
  • Body Control Module 5: 11 (MICRO2, 10A)
  • Steering Wheel Controls Backlighting: 12 (MINI, 5A)
  • Discrete Logic Ignition Sensor: 16 (MINI, 10A)
  • VPM: 17 (MICRO2, 10A)
  • Mirror Window Module: 18 (MICRO2, 10A)
  • Body Control Module 1: 19 (MICRO2, 15A)
  • Front Bolster (if equipped): 20 (MICRO2, 10A)
  • Heater, Ventilation and Air Conditioning Ignition/Heater, Ventilation and Air Conditioning Auxiliary: 24 (MICRO3, 10A)
  • Instrument Cluster Ignition/Sensing Diagnostic Module Ignition: 25 (MICRO3, 10A)
  • Tilt Column/SEO, Tilt Column Lock 1/SEO: 26 (MICRO3, 10A)
  • Data Link Connector/Driver Seat Module: 27 (MICRO3, 15A)
  • Passive Entry/Passive Start/Heater, Ventilation and Air Conditioning Battery: 28 (MICRO3, 15A)
  • Content Theft: 29 (MICRO2, 10A)
  • SEO/Automatic Level Control: 33 (MICRO2, 20A)
  • Park Enable Electric Adjustable Pedal (if equipped): 34 (MICRO2, 10A)
  • Miscellaneous R/C: 36 (MICRO2, 10A)
  • Heated Steering Wheel: 37 (MICRO2, 15A)
  • Steering Column Lock 2 (if equipped): 38 (MICRO2, 10A)
  • Instrument Cluster Battery: 39 (MICRO2, 10A)
  • Euro Trailer (if equipped): 42 (FMM/MCase, 10A)
  • Left Doors: 43 (FMM/MCase, 30A)
  • Driver Power Seat: 44 (FMM/MCase, 30A)
  • Right Heated/Cooled Seat: 46 (MICRO2, 20A)
  • Left Heated/Cooled Seat: 47 (MICRO2, 20A)
  • Accessory Power Outlet 2: 50 (FMM/MCase, 20A)
  • Retained Accessory Power/Accessory Relay: 52 (Relay)
  • Run/Crank Relay: 53 (Relay)

Instrument panel fuse block (right)

Passenger’s side dash edge, behind cover, for entertainment and blower.

  • Accessory Power Outlet 4: 4 (FMM/MCase, 20A)
  • Glove Box: 8 (MICRO2, 10A)
  • Steering Wheel Controls: 12 (MINI, 10A)
  • Body Control Module 8: 13 (MICRO2, 15A)
  • Body Control Module 4: 19 (MICRO2, 15A)
  • Rear Seat Entertainment: 20 (MICRO2, 15A)
  • Sunroof: 21 (FMM/MCase, 30A)
  • Info/Airbag: 26 (MICRO3, 10A)
  • Spare/RF WDW RN SW: 27 (MICRO3, 5A)
  • Obstacle Detection/USB: 28 (MICRO3, 10A)
  • Radio: 29 (MICRO2, 15A)
  • SEO B2: 36 (MICRO2, 10A)
  • SEO: 37 (MICRO2, 15A)
  • Body Control Module 2: 38 (MICRO2, 15A)
  • A/C Inverter: 39 (MICRO2, 20A)
  • Right Door Window Motor: 44 (FMM/MCase, 30A)
  • Front Blower: 45 (FMX/JCase, 40A)
  • Body Control Module 6: 46 (MICRO2, 15A)
  • Body Control Module 7: 47 (MICRO2, 15A)
  • Amplifier: 48 (MICRO2, 30A)
  • Right Front Seat: 49 (FMM/MCase, 30A)
  • Accessory Power Outlet 3: 50 (FMM/MCase, 20A)
  • Retained Accessory Power/Accessory Relay: 52 (Relay)

Rear compartment fuse block

Left side of luggage area behind panel, for rear amenities and defogger.

  • Heated Second Row Seat Left: 2 (MINI, 20A)
  • Heated Second Row Seat Right: 3 (MINI, 20A)
  • Heated Mirrors: 4 (MINI, 10A)
  • Liftgate: 5 (MINI, 30A)
  • Glass Breakage: 6 (MINI, 10A)
  • Liftglass: 7 (MINI, 10A)
  • Liftgate Module Logic: 8 (MINI, 10A)
  • Rear Wiper: 9 (MINI, 15A)
  • Rear Heater, Ventilation and Air Conditioning Blower: 10 (MINI, 30A)
  • Second Row Seat: 11 (MINI, 30A)
  • Rear Fog Lamp (if equipped): 19-1 (MINI)
  • Liftgate Module: 12 (FMM/MCase, 30A)
  • Third Row Seat: 13 (FMM/MCase, 30A)
  • Rear Accessory Power Outlet: 14 (FMM/MCase, 20A)
  • Rear Defogger: 15 (FMX/JCase, 40A)
  • Liftglass: 17 (Relay)
  • Rear Fog Lamp (if equipped): 18 (Relay)
  • Heated Mirrors: 19-2 (Relay)
  • Liftgate: 16 (Relay)
  • Rear Defogger: 1 (Relay)

2021-present Chevrolet Tahoe fuse boxes

Fifth-generation Tahoes pack cutting-edge connectivity and efficiency, with fuse blocks optimized for electric aids and advanced lighting. Current through 2026 models show minimal changes.

Engine compartment fuse block

Under a cover in the engine bay, manages modules, lamps, and cooling.

  • ELM 7 – Exterior Lighting Module 7: 6 (MINI)
  • ELM 4 – Exterior Lighting Module 4: 7 (MINI)
  • ELM 5 – Exterior Lighting Module 5: 9 (MINI)
  • Spare: 11 (MINI)
  • Washer Front: 13 (MINI)
  • Washer Rear: 14 (MINI)
  • Power Sounder: 16 (MINI)
  • Camera Wash: 26 (MINI)
  • Horn: 27 (MINI)
  • Headlamp RT – Right: 28 (MINI)
  • Headlamp LT – Left: 29 (MINI)
  • ELM 3 – Exterior Lighting Module 3: 30 (MINI)
  • ELM 1 – Exterior Lighting Module 1: 31 (MINI)
  • Not R/C: 33 (MINI)
  • OBD Body: 37 (MINI)
  • MISC Body: 38 (MINI)
  • Upfitter: 39 (MINI)
  • MISC Instrument Panel (IP): 40 (MINI)
  • Trailer Parking Lamps: 41 (MINI)
  • Right Taillamp: 42 (MINI)
  • Trailer Tow: 44 (MINI)
  • Secondary Axle Motor: 45 (MINI)
  • Engine Control Module (ECM) Ignition: 46 (MINI)
  • OBD Engine: 47 (MINI)
  • TCM – Telematics Control Module: 49 (MINI)
  • A/C Clutch: 50 (MINI)
  • Front Wiper: 52 (MINI)
  • Left Taillamps: 54 (MINI)
  • Trailer Back-up Lamp: 55 (MINI)
  • SADS – Semi Active Damping System: 56 (MINI)
  • Spare: 57 (MINI)
  • AFM 1 – Active Fuel Management 1: 60 (MINI)
  • Automatic Lamp Control (ALC) Main: 61 (MINI)
  • ICCM/CVS/DEF – Integrated Chassis Control Module/Canister Vent Solenoid/Diesel Exhaust Fluid: 62 (MINI)
  • AFM 2 – Active Fuel Management 2: 67 (MINI)
  • Left Trailer Stop Turn Lamp: 73 (MINI)
  • TIM 2 – Trailer Interface Module 2: 74 (MINI)
  • DEFC – Diesel Exhaust Fluid Controller: 75 (MINI)
  • Engine Control Module: 78 (MINI)
  • Cabin Cool Pump 17W: 80 (MINI)
  • Right Trailer Stop Turn Lamp: 81 (MINI)
  • TIM 1 – Trailer Interface Module 1: 82 (MINI)
  • FTZM – Fuel Tank Zone Module: 83 (MINI)
  • Engine: 85 (MINI)
  • Engine Control Module: 86 (MINI)
  • Injector B Even: 87 (MINI)
  • O2 B Sensor: 88 (MINI)
  • O2 A Sensor: 89 (MINI)
  • Injector A Odd: 90 (MINI)
  • Engine Control Module (ECM) Throttle Control: 91 (MINI)
  • Cool Fan Clutch AERO Shutter: 92 (MINI)
  • ELM 6 – Exterior Lighting Module 6: 10 (MINI)
  • REC 2 – Rear Electrical Center 2: 15 (FMX/JCase)
  • Spare: 17 (FMX/JCase)
  • DC/AC Inverter: 19 (FMX/JCase)
  • IECR 2: 20 (FMX/JCase)
  • IECL 2: 22 (FMX/JCase)
  • EBCM – Electronic Brake Control Module: 24 (FMX/JCase)
  • REC 1 – Rear Electrical Center 1: 25 (FMX/JCase)
  • Trailer Brake: 63 (FMX/JCase)
  • AUX UEC – Auxiliary Underhood Electrical Center: 65 (FMX/JCase)
  • Left Cool Fan Motor: 66 (FMX/JCase)
  • Automatic Lamp Control (ALC) Motor: 68 (FMX/JCase)
  • Starter Pinion: 69 (FMX/JCase)
  • Cool Fan Motor Lower: 71 (FMX/JCase)
  • Right Cool Fan Motor/ Lower: 72 (FMX/JCase)
  • ELEC RNG BDS: 76 (FMX/JCase)
  • Trailer Battery: 84 (FMX/JCase)
  • Transfer Case Control Module: 51 (FMM/MCase)
  • Starter Motor: 58 (FMM/MCase)
  • –: 5 (Relay)
  • DC/AC Inverter: 18 (Relay)
  • –: 23 (Relay)
  • Park Lamp: 35 (Relay)
  • Run/Crank: 36 (Relay)
  • Secondary Axle Motor: 43 (Relay)
  • A/C Clutch: 59 (Relay)
  • Starter Motor: 64 (Relay)
  • Starter Pinion: 70 (Relay)
  • Powertrain: 77 (Relay)

Instrument panel fuse block

Right side dash edge, pull cover, for controls and outlets.

  • Left Door: F2 (FMM/MCase)
  • Universal Garage Door Opener (UGDO)/OnStar Hands-free Calling (OHC)/ Camera: F3 (MICRO2, 5A)
  • Body Control Module 2: F4 (MICRO2, 15A)
  • Displays: F5 (MICRO2, 10A)
  • Left Door Panel: F8 (MICRO2, 15A)
  • Right Door Panel: F14 (MICRO2, 15A)
  • Steering Wheel Control: F17 (MICRO2, 10A)
  • Heated Wheel: F22 (MICRO2, 15A)
  • Spare: F28 (MICRO2, 10A)
  • Body Control Module 3: F31 (MICRO2, 15A)
  • Out of Park: F34 (MICRO2, 10A)
  • Electric Park Brake Switch: F42 (MICRO2, 10A)
  • Radio Module: F45 (MICRO2, 15A)
  • Body Control Module 1A: F46 (MICRO2, 15A)
  • Telematics Control Module: F48 (MICRO2, 10A)
  • Body Control Module 1: F49 (MICRO2, 15A)
  • Driver Monitoring System: F50 (MICRO2, 10A)
  • Tilt/Column Lock: F10 (MICRO3, 10A)
  • USB/Data Link Connector (DLC): F11 (MICRO3, 10A)
  • Central Gateway Module (CGM)/Onstar: F12 (MICRO3, 10A)
  • Active Vibration Module 1: F18 (MICRO3, 10A)
  • Search Engine Optimization (SEO)/UPFITTER: F25 (MICRO3, 10A)
  • USB/Search Engine Optimization (SEO) Retained Accessory Power (RAP): F26 (MICRO3, 15A)
  • Sensing and Diagnostic Module/ Automatic Occupant Sensing: F30 (MICRO3, 10A)
  • Center Stack Module (CSM)/USB: F32 (MICRO3, 15A)
  • Body Control Module 4: F33 (MICRO3, 15A)
  • Road Side Equipment: F43 (MICRO3, 10A)
  • Active Vibration Module 2: F44 (MICRO3, 10A)
  • Spare: F58 (MICRO3, 15A)
  • Front Blower: F6 (FMX/JCase, 40A)
  • Auxiliary Power Outlet (APO)/Retained Accessory Power: F27 (FMX/JCase, 20A)
  • Sunroof: F54 (FMX/JCase, 30A)
  • Auxiliary Power Outlet 3: F55 (FMX/JCase, 20A)
  • Auxiliary Power Outlet 1: CB1 (ATO, 25A)
  • Auxiliary Power Outlet 2: CB2 (ATO, 25A)
  • Retain Accessory Power/Accessory 1: K2 (Relay)
  • Retain Accessory Power/Accessory 2: K4 (Relay)
  • Right Door: F1 (FMM/MCase)
  • Direct Current/Direct Current Converter Battery 1: F56 (FMX/JCase, 40A)
  • Direct Current/Direct Current Converter Battery 2: F57 (FMX/JCase, 40A)

Rear compartment fuse block

Left side compartment behind panel, for seats, audio, and HVAC.

  • Remote Function Actuator: 1 (MICRO2, 10A)
  • Wireless Charging Module: 2 (MICRO2, 10A)
  • Heated Seat Module Row 1 (Battery 1): 3 (MICRO2, 20A)
  • Memory Seat Module (MSM) Driver: 4 (MICRO2, 30A)
  • Amplifier Auxiliary 2: 7 (MICRO2, 20A)
  • Power Folding Seat Row 2: 11 (MICRO2, 20A)
  • GBS: 12 (MICRO2, 10A)
  • Heated Seat Module Row 1 (Battery 2): 15 (MICRO2, 20A)
  • Right Hand Cinch Latch: 16 (MICRO2, 10A)
  • Memory Seat Module Passenger: 17 (MICRO2, 30A)
  • Rear Wiper: 18 (MICRO2, 15A)
  • Rear HVAC Display Control: 22 (MICRO2, 10A)
  • External Object Calculation Module: 23 (MICRO2, 15A)
  • Amplifier Auxiliary 3: 24 (MICRO2, 20A)
  • OBS DET: 25 (MICRO2, 15A)
  • Video Processing Module: 28 (MICRO2, 15A)
  • HFCR: 35 (MICRO2, 10A)
  • Exterior Lighting Module: 36 (MICRO2, 15A)
  • Power Slide Console: 38 (MICRO2, 10A)
  • Universal Park Assist: 43 (MICRO2, 10A)
  • Adaptive Forward Lighting/ Automatic Headlamp Leveling: 45 (MICRO2, 10A)
  • Left Hand Cinch Latch: 47 (MICRO2, 10A)
  • Lift Glass: 49 (MICRO2, 10A)
  • Search Engine Optimization Upfitter 2: 9 (FMM/MCase, 30A)
  • Motor Seatbelt Passenger: 10 (FMM/MCase, 30A)
  • Motor Seatbelt Driver: 19 (FMM/MCase, 30A)
  • Rear Defogger: 20 (FMM/MCase, 40A)
  • Rear Drive Control Module: 26 (FMM/MCase, 30A)
  • Amplifier Auxiliary 1: 27 (FMM/MCase, 30A)
  • Amplifier: 31 (FMM/MCase, 30A)
  • Rear HVAC Blower Motor: 46 (FMM/MCase, 30A)
  • Power Seat Recline Module: 48 (FMM/MCase, 30A)
  • Driver Power Seat: 50 (FMM/MCase, 30A)
  • Power Liftgate Module: 51 (FMM/MCase, 30A)
  • Passenger Power Seat: 52 (FMM/MCase, 30A)
  • Integrated Chassis Control Module: 33 (MICRO3, 15A)
  • Heated Seat Module Row 2: 34 (MICRO3, 20A)
  • L/GLASS: 55 (Relay)

Advanced tips for Chevrolet Tahoe owners

Diving into fuse diagnostics feels like unraveling a puzzle—start by matching symptoms to blocks, like dash issues pointing to instrument panels. For intermittent faults, wiggle harnesses while testing to reveal loose connections, especially in underhood areas prone to heat and vibration. Newer Tahoes with body control modules might need a scan tool to reset after replacements, avoiding phantom codes. Keep a spare fuse kit tailored to your model year handy for road trips, and apply anti-corrosion spray on exposed terminals in salty regions. Spotting patterns, such as multiple lighting fuses blowing, could trace to trailer wiring mods. Embracing these setups not only fixes problems but unlocks custom upfitter potential, transforming your Tahoe into a personalized rig for any challenge.