The fuel pump fuse is normally located in the engine compartment’s fuse/relay box (the Power Distribution Center under the hood). It is typically labeled FUEL PUMP on the lid diagram and generally uses a 20-amp or 30-amp fuse, depending on the model year. Some trims or older models may also have a secondary fuse in an interior fuse box, so it’s wise to check both locations and confirm with the diagram in your manual.
Common fuse locations to check
The following sections describe the two most common places where the fuel pump fuse might reside and how to identify it.
Engine bay Power Distribution Center (PDC)
In most Grand Cherokees, the engine bay fuse block is the primary source for the fuel pump fuse. Open the lid and consult the diagram on the inside for the exact position labeled FUEL PUMP. The fuse value is usually 20A or 30A, but it can vary by year and engine.
- Look for a fuse labeled “FUEL PUMP” or a similar fuel-related label on the PDC lid.
- Note the fuse rating shown on the diagram and inspect or replace if blown.
- Nearby you may also see the fuel pump relay; testing or swapping the relay can help diagnose pump issues if the fuse appears intact.
In most Grand Cherokees, the engine bay fuse block remains the primary reference for the fuel pump circuit, so start there before moving elsewhere.
Interior fuse box (in-cabin)
Some trims and older generations route the fuel pump circuit through an interior fuse box, often located on the driver’s side dash, under the knee panel, or near the center console. If the engine bay fuse box doesn’t show a FUEL PUMP fuse, or if a blown fuse has not resolved a no-pump condition, check the interior box using the diagram on its cover.
- Open the interior fuse box and locate the diagram for the fuel circuit.
- Identify any fuse labeled FUEL PUMP or FUEL; verify its rating and condition.
- Replace with the same amperage if blown and recheck the fuel pump operation.
Keep in mind that not all models use an interior fuel pump fuse, so prioritize the engine bay box as the starting point.
What to do if the fuse is blown
A blown fuel pump fuse can point to a circuit fault, a failing fuel pump, or a short in the wiring. Follow these steps to diagnose safely and effectively.
- Always replace a blown fuse with the same amperage rating; using a higher-rated fuse can hide a serious problem or cause wiring damage.
- Inspect the fuse holder and connectors for corrosion, looseness, or melted plastic. Replace damaged components as needed.
- With the ignition to ON (do not start), listen for the fuel pump priming sound. If you don’t hear it, test the pump circuit for continuity and check the relay.
- Inspect wiring from the fuse box to the fuel pump in the tank for wear, chafing, or a loose ground.
- If the fuse continues to blow after inspection and replacement, seek a professional diagnosis to avoid potential fire risk or fuel system damage.
Electrical issues in modern vehicles can have multiple causes, so thorough checking of fuses, relays, connectors, and the pump itself is essential for an accurate diagnosis.
Summary
For most Jeep Grand Cherokees, the fuel pump fuse sits in the engine compartment’s Power Distribution Center, labeled FUEL PUMP, with a typical rating of 20A or 30A. Some models also use a secondary fuse in an interior fuse box. Always verify by consulting the fuse box diagram on the lid or your owner's manual. If the fuse blows again after replacement, investigate the pump, relay, and wiring for faults, and consider professional service if the problem persists.