2023 Chevrolet Tahoe — Fuse Box Diagram & Amperage

As an ASE-certified master technician, I know that electrical issues can be frustrating. A blown fuse is a common culprit, and knowing where to look is the first step in diagnosing the problem. This guide provides a comprehensive overview of the fuse box locations, diagrams, and common issues for the 2023 Chevrolet Tahoe.

Important Note: The fuse numbers and circuits listed below are for the most common 2023 Tahoe configurations. Your vehicle's fuse arrangement may vary based on its specific trim level and options. Always cross-reference with the fuse legend printed on the inside of your fuse box cover or in your owner's manual for 100% accuracy.

Quick Answer: Fuse Box Locations

The 2023 Chevrolet Tahoe has four primary fuse box locations:

1. Underhood Fuse Block: Located in the engine bay, on the driver's side.
2. Left Instrument Panel Fuse Block: Located on the driver's side of the dashboard, accessible when the driver's door is open.
3. Right Instrument Panel Fuse Block: Located on the passenger's side of the dashboard, accessible when the passenger's door is open.
4. Rear Compartment Fuse Block: Located in the rear cargo area, on the driver's side, behind an access panel.

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Underhood Fuse Block Diagram

This fuse block houses high-amperage fuses and relays that power the most critical systems, including the engine, cooling fans, and starter.

Fuse #	Amp	Color	Circuit / Component Protected
F1	40A	Green	ABS Pump
F5	30A	Pink	Engine Cooling Fan
F11	20A	Yellow	Starter Motor Solenoid
F13	10A	Red	Right High-Intensity Discharge Headlamp
F14	10A	Red	Left High-Intensity Discharge Headlamp
F15	10A	Red	Powertrain Control Module (PCM) / Engine Control Module (ECM) - Ignition
F23	15A	Blue	A/C Compressor Clutch
F25	15A	Blue	Horn
F31	10A	Red	Main Ignition Relay
F34	20A	Yellow	Trailer Towing Brake Control Module
F44	25A	Natural	Front Wipers

Relay Locations (Common):

• R2: A/C Compressor Clutch Relay
• R4: Starter Relay
• R8: Run/Crank Relay
• R10: Engine Cooling Fan Relay

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Left (Driver) Instrument Panel Fuse Block Diagram

This panel, located on the driver's side of the dash, primarily protects interior electronics and controls.

Fuse #	Amp	Color	Circuit / Component Protected
F1	10A	Red	Steering Wheel Controls, Instrument Cluster
F4	10A	Red	Airbag System / Inflatable Restraint Module
F5	15A	Blue	Data Link Connector (OBD-II Port)
F16	10A	Red	Head-Up Display (HUD)
F19	7.5A	Brown	Body Control Module (BCM) - Ignition

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Right (Passenger) Instrument Panel Fuse Block Diagram

Located on the passenger's side of the dash, this panel handles infotainment and climate controls.

Fuse #	Amp	Color	Circuit / Component Protected
F1	10A	Red	Infotainment System, Radio Control
F2	10A	Red	Infotainment Display Screen
F13	15A	Blue	Wireless Charger
F20	20A	Yellow	HVAC Control Module, Blower Motor
F38	20A	Yellow	Cigar Lighter / 12V Power Outlet (Front)

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Rear Compartment Fuse Block Diagram

Found in the cargo area, this box powers the fuel system, rear vehicle accessories, and trailer components.

Fuse #	Amp	Color	Circuit / Component Protected
F1	20A	Yellow	Fuel Pump
F6	10A	Red	Left Stop/Turn Lamp (Trailer)
F7	10A	Red	Right Stop/Turn Lamp (Trailer)
F10	15A	Blue	Rear Wiper
F12	30A	Green	Trailer Brake Control Module Power
F15	15A	Blue	12V Power Outlet (Rear Cargo)
F23	10A	Red	Tail Lights / Park Lamps
F24	10A	Red	Brake Lights (CHMSL)

How to Test a Fuse

If a component stops working, checking the fuse is a great first step.

1. Turn the vehicle off.
2. Locate the correct fuse box and find the fuse in question using the diagram.
3. Remove the fuse. Use a fuse puller (often found in the fuse box) if available, or gently use needle-nose pliers.
4. Visually inspect the fuse. Look at the thin metal strip inside the colored plastic housing. If that strip is broken or burned through, the fuse is blown.
5. Confirm with a multimeter (optional but recommended). Set your multimeter to the continuity setting (it often has a sound icon). Touch the probes to the two metal tabs on top of the fuse. If the multimeter beeps, the fuse is good. If it stays silent, the fuse is blown and has no continuity.
6. Replace the fuse. If blown, replace it with a new fuse of the exact same amperage rating. Using a higher-rated fuse can cause a fire.

Common Blown Fuses on the 2023 Chevrolet Tahoe

• Cigar Lighter / 12V Power Outlet Fuse (F38 - Passenger Panel, F15 - Rear): This is one of the most common blown fuses. It's almost always caused by a faulty device being plugged in or by overloading the circuit (e.g., using a high-powered air compressor). What to check first: Unplug all devices from the outlets. Replace the fuse. If it blows again immediately without anything plugged in, you may have a short in the socket wiring.

• Trailer Light Fuses (F6, F7 - Rear): If your trailer lights aren't working but the Tahoe's lights are, these fuses are the first place to look. This is almost always caused by a wiring issue on the trailer itself (a shorted wire or faulty bulb). What to check first: Disconnect the trailer. Replace the fuse(s). If they don't blow, the problem is with your trailer wiring, not the truck.

• Fuel Pump Fuse (F1 - Rear): While not as common on a new vehicle, if your Tahoe cranks but won't start, it's worth checking this fuse. If it's blown, it could indicate a problem with the fuel pump driver module or the pump itself. Replacing the fuse might get you started, but if it blows again, the underlying electrical issue needs professional diagnosis.

If you find yourself repeatedly blowing the same fuse or are uncomfortable with electrical diagnosis, it's best to have the vehicle inspected by a professional. An ongoing electrical issue can be a symptom of a larger problem.

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