2023 GMC Yukon Fuse Box Diagram & Amperage

Quick Answer

The 2023 GMC Yukon has main fuse boxes located in three primary areas: under the hood (engine compartment), behind the instrument panel (passenger side kick panel), and in the rear cargo area (driver's side).

Under-Hood Fuse Box

The under-hood fuse box contains fuses and relays for critical engine functions, powertrain, and some high-current accessories. It’s typically located on the driver's side of the engine compartment, near the battery. Always consult your owner's manual and the fuse box lid diagram for the most accurate information as configurations can vary slightly by trim level.

Instrument Panel Fuse Box (Passenger Side Kick Panel)

This fuse box is typically located inside the cabin, usually behind the passenger side kick panel or a removable access panel on the side of the dashboard. It primarily manages fuses for interior accessories, comfort features, and some communication systems.

Rear Cargo Area Fuse Box (Driver's Side)

Located in the rear cargo area, often behind an access panel on the driver's side, this fuse box controls power to rear accessories, third-row features, and elements related to trailering or cargo functions.

How to Test a Fuse

Testing a fuse is a straightforward process that can help you diagnose electrical issues. You'll need a fuse puller (usually found in one of the fuse boxes) and a multimeter or a fuse tester.

1. Locate the Fuse Box: Identify the correct fuse box based on the circuit that's not working.
2. Identify the Suspect Fuse: Consult the fuse diagram (either in your owner's manual or on the fuse box lid) to find the fuse for the malfunctioning component.
3. Visual Inspection: Most modern fuses have a clear plastic body, allowing for a visual check. Look for a broken or burnt wire inside the fuse. If it's broken, the fuse is blown.
4. Remove the Fuse: Use the fuse puller to carefully extract the suspect fuse from its slot.
5. Use a Multimeter (Continuity Test):
   • Set your multimeter to the continuity setting (it usually looks like a speaker or a diode symbol).
   • Touch one probe of the multimeter to each metal terminal of the fuse. If the multimeter beeps or shows a reading close to zero ohms, the fuse is good. If there's no beep or an "OL" (open loop) reading, the fuse is blown.
6. Use a Fuse Tester:
   • A dedicated fuse tester often has two prongs. Simply touch the prongs to the metal terminals of the fuse. If the light on the tester illuminates, the fuse is good. If not, it's blown.
7. Replace the Fuse: If the fuse is blown, replace it with a new fuse of the exact same amperage rating and type. Never use a fuse with a higher amperage rating, as this can lead to electrical system damage or fire.

Common Blown Fuses on This Vehicle

While any fuse can blow, some circuits are prone to experiencing issues due to wear, accessory usage, or specific component failures. On the 2023 GMC Yukon, common blown fuses often relate to:

• Cigar Lighter/12V Outlets: These fuses often blow due to overcurrent from charging multiple devices or using high-power accessories. If your 12V outlets aren't working, check the corresponding fuse in the instrument panel fuse box (e.g., F2 for the front).
• Radio/Infotainment System: Issues with the radio, touch screen, or connectivity can sometimes be traced to a blown fuse. Check the infotainment fuse (e.g., F1 in the instrument panel fuse box).
• Blower Motor (Front and Rear): If your HVAC fan isn't working on any speed, it's often a sign of a blown blower motor fuse. Check F7 in the under-hood fuse box for the front blower and F10 in the rear cargo fuse box for the rear blower.
• Headlights: If one or both headlights are out (and the bulbs are confirmed good), check the respective headlight fuses in the under-hood fuse box (e.g., F9-F12).
• Trailer Brake Controller: For Yukons equipped with towing packages, issues with the trailer brakes can sometimes be linked to a blown fuse in the under-hood fuse box (e.g., F13).

What to Check First: Always start by visually inspecting the fuse that corresponds to the non-functioning component. If the fuse appears intact, proceed with a continuity test using a multimeter. If the fuse is blown, ensure you replace it with the correct amperage to prevent further electrical problems.

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