2024 Chevrolet Tahoe — Fuse Box Diagram & Amperage

Quick answer

• Under-hood fuse block: left side of engine compartment near the battery and air box, under a plastic cover.
• Instrument panel (I/P) fuse block: driver’s side of the dash, behind the end panel accessed with the driver door open.
• Rear compartment fuse block: left rear quarter panel in the cargo area, behind the trim access panel.

Note: 2024 Tahoe fuse assignments vary by trim/options (gas/diesel, Max Trailering, police package, rear seat media, etc.). Use the printed legend on the fuse box lid and the owner’s manual to verify positions. The tables below list the most common circuits and typical amp/color used on this platform.

Under-hood fuse block (engine compartment)

This block feeds high-current powertrain, lighting, ABS, cooling, and trailer functions. It also houses several relays (starter, A/C clutch, cooling fan, headlamp, trailer, etc.).

Relays typically in this block: Starter relay, A/C clutch relay, High beam relay, Low beam relay, Cooling fan relays (multiple speeds), Trailer run/park relay, Trailer battery charge relay, Fuel pump relay (on some builds; others are solid-state controlled).

Instrument panel fuse block (driver’s dash end panel)

This block supplies interior electronics, ignition/run power distribution, airbags, infotainment, and 12V outlets. Access by prying off the small side cover with the driver door open.

Relays: Many I/P relay functions on this platform are solid-state within the BCM (RAP/accessory, retained power, interior lighting). If a physical relay is present, it is identified on the panel legend.

Rear compartment fuse block (left cargo trim)

This block supports rear body features, liftgate, rear HVAC, defogger, and sometimes trailer functions depending on equipment. Remove the small access door in the left rear cargo panel.

Relays: Rear defogger relay, Liftgate relay(s), Rear wiper relay (if equipped). Some functions may be solid-state within the body control module.

Important: Fuse numbers and exact ratings change with engine (5.3L/6.2L/3.0L Duramax), Max Trailering Package, police package, and rear-seat media. Always confirm with the diagram on the fuse box cover and the Owner’s Manual.

How to test a fuse

• Visual check: Remove the suspect fuse with the puller from the lid. If the metal link is melted or broken, replace it with the exact same amp rating and type.
• Test light method (in place): With the circuit powered, touch the probe to the two tiny test points on top of the fuse. The light should illuminate on both sides. Power on one side only indicates a blown fuse.
• Multimeter continuity (removed): Set to continuity/ohms. A good fuse reads near 0 Ω; a blown fuse reads OL/open.
• Load check: If a replacement pops immediately, stop—there is a shorted wire/component downstream that needs diagnosis before installing another fuse.

Common blown fuses on this vehicle (what to check first)

• 12V power outlets/cigar lighter (20A yellow): Coins, charger tips, or moisture in the socket commonly short these. Inspect each outlet carefully before replacing the fuse.
• Trailer lighting (10–15A red/blue): Trailer wiring faults are frequent. Unplug the trailer and retest the truck lamps. Inspect the 7-pin connector for corrosion and crushed/bare wires on the trailer.
• Trailer brake/charge (JCase 30–40A): Overloaded trailer batteries or shorted charge lines can pop these. Verify the trailer charge line and breakaway switch wiring.
• Headlamps (10A red): If one side repeatedly blows, inspect that headlamp harness for rubbing at the radiator support and inside the lamp housing for moisture.
• Blower motor (30–40A JCase): If it blows on high, suspect a failing blower motor drawing excessive current or a shorted power feed at the resistor/module.
• Fuel pump (20A yellow): If the fuse blows, inspect wiring near the tank and the frame rail-mounted fuel pump control module for water intrusion.
• ABS (40–60A JCase): Rare to blow; if it does, suspect a shorted pump motor or chafed harness at the left frame rail.
• Radio/infotainment (15–30A): Aftermarket accessories tied into the same circuit can overload it. Remove add-ons and check.

If your Tahoe’s panel doesn’t match the above, it’s normal—GM uses multiple configurations. Match your exact positions and ratings to the legend in your fuse box lid.

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