2000 GMC Jimmy Fuel Pump Fuse: Location, Symptoms, and Replacement Guide

The bottom line: The fuel pump fuse on a 2000 GMC Jimmy is located in the underhood fuse block, specifically in the engine compartment fuse box on the driver’s side near the battery. It is a 20-amp fuse labeled “FUEL PUMP” or “F/P.” If your Jimmy cranks but won’t start, or the engine stalls while driving, the fuel pump fuse is one of the first things to check before replacing the fuel pump itself. This guide walks you through finding, testing, and replacing the fuse, plus common causes of fuse failure, so you can get your SUV back on the road without unnecessary repairs.

1. Understanding the 2000 GMC Jimmy Fuel Pump Fuse System

The 2000 GMC Jimmy relies on an electric fuel pump mounted inside the fuel tank. This pump sends fuel under pressure to the engine’s fuel injection system. The electrical circuit that powers the fuel pump includes a fuse, a relay, and wiring connections. The fuse acts as a safety device. If there is a short circuit or an overload in the fuel pump circuit, the fuse blows to prevent damage to the wiring or the pump itself.

Key specifications for the 2000 GMC Jimmy fuel pump fuse:

  • Fuse type: Mini blade fuse
  • Amperage: 20 amps (some models may use a 15-amp fuse, but 20-amp is standard for V6 engines)
  • Fuse location: Underhood fuse block (also called the engine compartment fuse box)
  • Fuse label: “FUEL PUMP” or “F/P” on the fuse box cover diagram

The fuel pump relay is also located in the same underhood fuse block. The relay controls when power is sent to the fuel pump. If the fuse is good but the pump still doesn’t run, the relay may be faulty. We will cover both in this guide.

2. Where to Find the 2000 GMC Jimmy Fuel Pump Fuse

The fuse box for the 2000 GMC Jimmy is located under the hood. You do not need to remove the interior panels or go under the dashboard. Here is the exact location:

Step-by-step instructions to find the fuse box:

  1. Open the hood of your GMC Jimmy. Make sure the engine is off and cool.
  2. Look at the driver’s side of the engine compartment, near the battery. You will see a black plastic rectangular box. This is the underhood fuse block.
  3. On top of the fuse box, there is a cover. Press the tabs on the sides of the cover and lift it off.
  4. Inside the cover, you will see a diagram that lists all the fuses and relays. Look for the label “FUEL PUMP” or “F/P.” Depending on the year and trim, the fuel pump fuse may be in position number 15 or 16. The 20-amp fuse is usually in the middle row.
  5. If you cannot find the label, check the owner’s manual. The manual has a diagram for the underhood fuse block.

Tip: The 2000 GMC Jimmy also has a fuse panel inside the vehicle, under the dashboard on the driver’s side. However, the fuel pump fuse is NOT in that panel. It is only in the underhood fuse block.

3. Symptoms of a Blown Fuel Pump Fuse in a 2000 GMC Jimmy

A blown fuel pump fuse can cause several noticeable problems. Recognizing these symptoms early can save you time and money.

Common symptoms include:

  • Engine cranks but will not start: This is the most common symptom. The starter motor turns the engine over, but the engine does not fire because no fuel is reaching the injectors.
  • Engine stalls while driving: A blown fuse can cause the fuel pump to stop working suddenly while the vehicle is moving. This is dangerous, especially on highways.
  • Engine runs rough or hesitates: If the fuse is partially blown or has a loose connection, the fuel pump may not receive full power. This can cause low fuel pressure, leading to hesitation, surging, or poor acceleration.
  • No fuel pump noise: When you turn the ignition key to the ON position (without starting the engine), you should hear a faint whirring sound from the fuel pump for about 2 seconds. If you hear no sound, the pump may not be getting power.
  • Check Engine Light illuminates: The powertrain control module (PCM) monitors the fuel pump circuit. A blown fuse may trigger a trouble code, such as P0230 (fuel pump primary circuit malfunction).

Important: These symptoms can also be caused by a failing fuel pump, a bad relay, or a wiring issue. Always check the fuse first, because it is the easiest and cheapest fix.

4. How to Test the 2000 GMC Jimmy Fuel Pump Fuse

Testing the fuel pump fuse is a simple task that requires only a few tools. Here is how to do it correctly.

Tools needed:

  • Fuse puller tool (usually stored in the fuse box cover)
  • Multimeter or test light (optional, but recommended)
  • Replacement 20-amp mini blade fuse (buy a pack from any auto parts store)

Step 1: Locate the fuse.
Find the underhood fuse block as described in section 2. Remove the cover.

Step 2: Visually inspect the fuse.
Look at the fuse through the clear plastic top. A good fuse will have a solid metal strip connecting the two prongs. A blown fuse will have a broken or melted metal strip. Sometimes the break is very small, so use a flashlight.

Step 3: Use a multimeter to test continuity.
Set your multimeter to the ohms (Ω) setting or continuity mode. Touch one probe to each of the two metal prongs on the top of the fuse. If the multimeter shows a reading close to 0 ohms (or beeps on continuity mode), the fuse is good. If it shows infinity (OL) or no beep, the fuse is blown.

Step 4: Use a test light (optional).
If you have a test light, you can check for power at the fuse socket. Turn the ignition key to the ON position. Touch the test light probe to one of the metal prongs in the fuse socket. If the light illuminates, there is power. Then test the other prong. If only one side has power, the fuse is blown.

Step 5: Replace the fuse if necessary.
Use the fuse puller tool to remove the old fuse. Insert a new 20-amp mini blade fuse. Make sure it is pushed in securely.

Caution: Never use a fuse with a higher amperage rating (e.g., a 30-amp fuse in place of a 20-amp). This can cause the wiring to overheat and start a fire.

5. Common Causes of a Blown Fuel Pump Fuse on a 2000 GMC Jimmy

If the new fuse blows immediately after you replace it, there is an underlying problem that needs to be fixed. Here are the most common causes.

1. Faulty fuel pump.
The fuel pump motor can wear out over time. As it ages, the internal bearings may seize, or the motor windings may short out. This causes a high current draw that blows the fuse. This is the most common reason for a blown fuel pump fuse on a 2000 GMC Jimmy.

2. Short circuit in the wiring.
The wiring from the fuse box to the fuel pump can chafe against metal edges, rub against the frame, or get damaged by road debris. Moisture and corrosion can also cause a short circuit. Inspect the wiring harness along the frame rail, near the fuel tank, and at the fuel pump connector.

3. Bad fuel pump relay.
The fuel pump relay switches power on and off. If the relay fails internally, it may stick in the closed position, sending continuous power to the pump even when the engine is off. This can overload the circuit and blow the fuse.

4. Corroded connections.
The fuel pump electrical connector at the top of the fuel tank can corrode due to moisture. Corrosion increases resistance, which generates heat and can cause the fuse to blow.

5. Aftermarket modifications.
If your Jimmy has an aftermarket stereo, alarm system, or auxiliary lights that were wired into the fuel pump circuit, they may be causing an overload. Check any add-on accessories.

6. How to Replace the Fuel Pump Fuse on a 2000 GMC Jimmy

Replacing the fuel pump fuse is a straightforward process. Follow these steps carefully.

Step 1: Safety first.
Park the vehicle on a level surface. Turn off the engine and remove the key from the ignition. Disconnect the negative battery cable to prevent any electrical shorts.

Step 2: Locate the underhood fuse block.
Open the hood and find the fuse box on the driver’s side near the battery. Remove the cover.

Step 3: Identify the fuel pump fuse.
Refer to the diagram on the fuse box cover. Look for the 20-amp fuse labeled “FUEL PUMP” or “F/P.”

Step 4: Remove the old fuse.
Use the fuse puller tool to grip the fuse and pull it straight out. If you do not have a fuse puller, you can use needle-nose pliers, but be careful not to damage the fuse socket.

Step 5: Install the new fuse.
Insert a new 20-amp mini blade fuse into the same slot. Push it down until it is fully seated.

Step 6: Test the repair.
Reconnect the negative battery cable. Turn the ignition key to the ON position. Listen for the fuel pump to prime (a faint whirring sound for about 2 seconds). If you hear the pump, the fuse is working. Try starting the engine.

Step 7: Verify the fuse is not blown again.
If the engine starts, let it run for a few minutes. Then turn off the engine and check the fuse again. If it is still good, the problem is solved.

7. When to Replace the Fuel Pump Instead of Just the Fuse

If the new fuel pump fuse blows again after a short time, the fuel pump itself is likely failing. Here are signs that you need to replace the fuel pump on your 2000 GMC Jimmy.

Signs the fuel pump is bad:

  • The fuse blows repeatedly after replacement.
  • The fuel pump is noisy. A failing pump may make a whining or buzzing sound.
  • The engine lacks power, especially uphill.
  • The vehicle hesitates or surges during acceleration.
  • The fuel pump does not prime when you turn the key to ON.
  • The Check Engine Light shows a code related to fuel pressure (e.g., P0087, P0230).

Replacing the fuel pump on a 2000 GMC Jimmy requires removing the fuel tank. This is a complex job that involves disconnecting fuel lines, the fuel filler neck, and the electrical connector. If you are not comfortable with this task, take it to a professional mechanic.

8. How to Test the Fuel Pump Relay on a 2000 GMC Jimmy

Sometimes the fuel pump relay fails, not the fuse. The relay is located in the same underhood fuse block. Here is how to test it.

Step 1: Locate the relay.
Look at the fuse box diagram for the relay labeled “FUEL PUMP RELAY” or “F/P RELAY.” It is usually a square black relay.

Step 2: Swap the relay with another relay.
Find a relay of the same type in the fuse box (e.g., the horn relay or the A/C compressor relay). Pull out the fuel pump relay and swap it with the other relay. If the fuel pump starts working, the original relay is bad.

Step 3: Use a multimeter.
If you have a multimeter, you can test the relay coil resistance. Measure between pins 85 and 86. The reading should be between 50 and 120 ohms (depending on the relay). If it is open or shorted, replace the relay.

Step 4: Replace the relay.
If the relay is faulty, buy a new one from an auto parts store. The part number is typically ACDelco D1347 or equivalent. Insert the new relay into the same slot.

9. Recommended Replacement: KEMSO Fuel Pump for Your 2000 GMC Jimmy

If you determine that the fuel pump itself needs replacement, you want a reliable, high-performance product that will last. We recommend the KEMSO Fuel Pump for your 2000 GMC Jimmy.

Why choose KEMSO?

  • High performance: KEMSO fuel pumps are engineered to deliver consistent fuel pressure and flow, ensuring your engine runs smoothly under all conditions.
  • OEM Replacement: They are designed as direct replacements for the original factory pump. No modifications are needed. They fit perfectly in the fuel tank assembly.
  • Lifetime warranty: KEMSO backs every fuel pump with a lifetime warranty. If the pump ever fails, you get a replacement at no extra cost. This gives you peace of mind.

How to buy:
Visit the KEMSO Racing website at https://www.kemsoracing.com/ to browse their selection of fuel pumps. They offer pumps for a wide range of vehicles, including the 2000 GMC Jimmy. The website is easy to navigate, and their customer support team can help you find the exact part for your vehicle.

Installation tip: When replacing the fuel pump, always replace the fuel filter at the same time. A clogged filter can put extra strain on the new pump. Also, clean the fuel tank if there is debris or rust inside.

10. Avoiding Common Mistakes When Dealing with the Fuel Pump Fuse

Many DIYers make mistakes when troubleshooting the fuel pump circuit. Here are the most common errors and how to avoid them.

Mistake 1: Replacing the fuse without checking the cause.
If you put in a new fuse and it blows right away, do not keep replacing it. This can damage the fuel pump or wiring. Find the root cause first.

Mistake 2: Using a fuse with higher amperage.
Never use a 25-amp or 30-amp fuse in place of a 20-amp fuse. The wiring is designed for a specific current. A higher-rated fuse will not protect the circuit and can cause a fire.

Mistake 3: Ignoring the fuel pump relay.
If the fuse is good but the pump does not run, the relay may be the problem. Test the relay before assuming the pump is bad.

Mistake 4: Forgetting to relieve fuel pressure.
Before disconnecting any fuel lines, always relieve the fuel pressure. The 2000 GMC Jimmy has a schrader valve on the fuel rail. Press the valve to release pressure. This prevents fuel spray and potential fire.

Mistake 5: Not checking the ground connection.
The fuel pump ground wire is attached to the frame near the fuel tank. If this ground is corroded or loose, the pump may not work properly. Clean and tighten the ground connection.

11. Preventive Maintenance for the Fuel System on a 2000 GMC Jimmy

Taking care of your fuel system can prevent many problems, including blown fuses.

Tips for maintaining your fuel system:

  • Keep the gas tank at least a quarter full. Running on low fuel can cause the fuel pump to overheat because the fuel helps cool the pump.
  • Change the fuel filter every 30,000 miles. A clogged filter forces the fuel pump to work harder, increasing current draw.
  • Use quality fuel. Cheap fuel may contain contaminants that can damage the pump and clog the filter.
  • Inspect the fuel pump wiring annually. Look for chafed wires, loose connections, or corrosion.
  • Check the fuse box for moisture. Water can cause corrosion on the fuse terminals. Keep the fuse box cover on and sealed.

12. Frequently Asked Questions About the 2000 GMC Jimmy Fuel Pump Fuse

Q: Can a bad fuel pump cause the fuse to blow?
A: Yes. A failing fuel pump motor can draw excessive current, which will blow the 20-amp fuse.

Q: How many fuses are there for the fuel pump?
A: The 2000 GMC Jimmy has one fuel pump fuse in the underhood fuse block. There is also a fuel pump relay, but no interior fuse for the pump.

Q: Can I drive with a blown fuel pump fuse?
A: No. The engine will not start, or it will stall immediately. You must replace the fuse or fix the underlying problem to drive.

Q: Is there a fuse for the fuel pump inside the cabin?
A: No. The only fuel pump fuse is under the hood. The interior fuse panel (under the dashboard) does not contain a fuel pump fuse.

Q: How much does it cost to replace a fuel pump fuse?
A: A pack of 20-amp mini blade fuses costs around $5 to $10 at any auto parts store. This is the cheapest fix for a no-start condition.

Q: What if the fuse is good but the fuel pump still doesn’t run?
A: Check the fuel pump relay, the wiring, and the fuel pump itself. Use a multimeter to test for power at the fuel pump connector at the tank.

13. Final Thoughts on the 2000 GMC Jimmy Fuel Pump Fuse

The 2000 GMC Jimmy fuel pump fuse is a simple part that can cause a lot of frustration if it fails. Always check the fuse first when your Jimmy cranks but does not start. It takes only a few minutes and costs almost nothing. If the fuse is blown, replace it with a new 20-amp mini blade fuse. If it blows again, you likely have a faulty fuel pump, a bad relay, or a wiring short.

Replacing the fuel pump is a bigger job, but it is a common repair on these SUVs. When you do replace the pump, choose a high-quality product like the KEMSO Fuel Pump. It is a direct OEM replacement, offers high performance, and comes with a lifetime warranty. Visit the KEMSO Racing website at https://www.kemsoracing.com/ to find the right pump for your 2000 GMC Jimmy and get back on the road with confidence.


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