2017 Chevrolet Tahoe Fuse Box Diagram & Amperage

Quick answer

The 2017 Chevrolet Tahoe has three main fuse box locations: under the hood (engine compartment), inside the cabin on the passenger side kick panel, and in the rear cargo area.

Underhood Fuse Block

The underhood fuse block is located in the engine compartment on the driver's side, near the battery. This fuse box contains fuses for critical engine components, powertrain, and some exterior lighting. The legend on the fuse box cover will provide the most accurate information for your specific vehicle's trim level.

Underhood Relays: This fuse box also houses several relays crucial for vehicle operation, including the fuel pump relay, starter relay, A/C compressor relay, and cooling fan relays. Their exact location will be printed on the fuse box lid.

Instrument Panel Fuse Block (Passenger Side Kick Panel)

The instrument panel fuse block is located on the passenger side, behind the kick panel near the floorboard. This fuse box primarily handles interior electrical components, infotainment, power accessories, and some body control functions.

Instrument Panel Relays: This fuse box may contain relays for power windows, door locks, and other accessory functions. Refer to the fuse panel cover for relay identification.

Rear Cargo Area Fuse Block

The rear cargo area fuse block is typically located on the driver's side, behind a trim panel in the cargo area. This fuse box services components primarily in the rear of the vehicle, including rear power outlets, tail lights, and some convenience features.

Rear Cargo Relays: This fuse box may house relays for the power liftgate or rear HVAC system. Always consult the diagram on the fuse box cover.

How to Test a Fuse

Testing a fuse is a straightforward process that can help diagnose electrical issues. You will need a multimeter or a fuse puller with a built-in tester.

1. Safety First: Always turn off the ignition and remove the key before working with fuses. If testing under the hood, disconnect the negative battery terminal for added safety.
2. Locate the Blown Fuse: Visually inspect the fuse for a broken wire inside. If it's a clear-bodied fuse, this is usually obvious. For opaque fuses or less obvious breaks, use your tester.
3. Using a Multimeter: Set your multimeter to the continuity setting. Touch the probes to the two small metal test points on the top of the fuse. A good fuse will show continuity (a beep or a reading close to zero ohms). A blown fuse will show no continuity or an "open circuit" reading.
4. Using a Test Light: For fuses with exposed test points, you can use a 12V test light. With the ignition on (but the engine off for safety), touch the tip of the test light to each metal test point on top of the fuse. If the light illuminates on both sides, the fuse is good. If it only illuminates on one side or not at all, the fuse is blown.
5. Replace with Correct Amperage: Always replace a blown fuse with a new fuse of the exact same amperage (number) and type. Using a fuse with a higher amperage can lead to serious electrical damage or fire.

Common Blown Fuses on This Vehicle

While any fuse can blow, some are more common than others due to usage or particular failure modes.

• Cigar Lighter/12V Outlets: These fuses often blow due to overcurrent from accessories, faulty chargers, or foreign objects inserted into the outlet. If your phone charger or a portable air compressor stops working, check these first.
• Radio/Infotainment System: Issues with aftermarket head units, faulty wiring, or a short in an accessory connected to the system can cause this fuse to blow. If your radio suddenly goes dark, this is a good place to start troubleshooting.
• Trailer Brake/Tow Package Fuses: If you frequently tow or experienced issues with your trailer's electrical system, the dedicated fuses for the trailer brake controller or trailer lighting can blow to protect the vehicle's system. Always check these if you have towing-related electrical problems.
• Blower Motor: A failing blower motor or an obstruction in the HVAC system forcing the motor to draw too much current can cause the blower motor fuse to blow, resulting in no airflow from the vents.

Always remember to check the component related to the fuse after replacement. If a fuse blows repeatedly, there's an underlying electrical issue that needs professional diagnosis.

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