🔧 Fuel Pump - Replacement

On your Grand Cherokee, the fuel pump is part of the in-tank fuel pump module. The job usually means relieving fuel pressure, accessing the module, and replacing the seal and module assembly so the fuel system stays leak-free.

Difficulty Level: Advanced | Estimated Time: 4-6 hours

---

⚠️ Safety & Precautions

• Fuel vapors are flammable. Work outside or in a very well-ventilated area.
• Disconnect the negative battery cable before opening the fuel system.
• Do not smoke, spark, or use heat near the vehicle.
• Keep a fire extinguisher nearby.
• If the fuel tank must be lowered, support it securely with a transmission jack or floor jack.
• Relieve fuel pressure before disconnecting any fuel lines.

---

🔧 Required Tools

You'll need the following tools for this repair:

• 10mm socket
• 13mm socket
• Ratchet
• 1/4-inch drive extension
• Flat blade trim tool
• Fuel line disconnect tool set
• Fuel pump lock ring tool (specialty)
• Torque wrench
• Transmission jack or floor jack rated 3-ton minimum
• Jack stands rated for vehicle weight
• Drain pan
• Shop towels
• Safety glasses
• Nitrile gloves

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel pump module assembly - Qty: 1
• Fuel pump module seal/O-ring - Qty: 1
• Fuel tank lock ring - Qty: 1
• Fuel tank retaining strap bolts - Qty: 2

---

📋 Before You Begin

• Run the fuel level as low as safely possible before starting. A nearly empty tank is much easier to handle.
• Park on level ground and set the parking brake.
• Disconnect the negative battery cable.
• Have a drain pan and shop towels ready for fuel drips.
• Label every connector before unplugging it.

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve fuel pressure

• Remove the fuel pump relay or fuse from the underhood fuse box.
• Start the engine and let it run until it stalls.
• Crank for a few seconds more, then turn the key off.

Step 2: Disconnect the battery

• Use a 10mm socket to remove the negative battery cable.
• Isolate the cable so it cannot touch the terminal again.

Step 3: Access the fuel pump module

• If your Grand Cherokee has an access panel: remove the rear seat lower cushion if needed, then use a flat blade trim tool to lift the access cover.
• If there is no access panel: the fuel tank must be lowered.

Step 4: Remove the fuel tank if required

• Support the tank with a transmission jack or floor jack rated 3-ton minimum.
• Use a 13mm socket to remove the tank strap bolts.
• Lower the tank slightly and disconnect the electrical connector and vapor/fuel lines with the fuel line disconnect tool set.
• Lower the tank fully and move it out from under the vehicle.

Step 5: Disconnect the module connections

• Clean around the fuel pump opening with shop towels to keep dirt out.
• Disconnect the electrical connector from the module.
• Release any fuel line quick-connects with the fuel line disconnect tool set.

Step 6: Remove the lock ring

• Use a fuel pump lock ring tool (specialty) to turn the ring counterclockwise.
• Lift the lock ring off carefully.
• Remove the fuel pump module straight up and out of the tank.

Step 7: Install the new module

• Transfer any required parts from the old module only if the new part instructions require it.
• Install the new fuel pump module seal/O-ring in the tank opening.
• Lower the new module straight into the tank.
• Install the lock ring and tighten it with the fuel pump lock ring tool (specialty) until fully seated. Torque to factory specification.

Step 8: Reinstall the tank

• Raise the tank with the transmission jack or floor jack rated 3-ton minimum.
• Reconnect the fuel lines and electrical connector.
• Install the tank straps with a 13mm socket. Torque to factory specification.

Step 9: Reconnect battery and prime the system

• Reconnect the negative battery cable with a 10mm socket.
• Cycle the ignition to ON for 5 seconds, then OFF, 3-4 times to prime the fuel system.
• Check carefully for fuel leaks at the module and line connections.

---

✅ After Repair

• Start the engine and let it idle.
• Inspect under the vehicle and around the tank for any fuel seepage.
• Clear any stored fuel pressure or low-pressure codes with a scan tool if needed.
• Road test and verify normal acceleration and no warning lights.

---

💰 DIY vs Shop Cost

Shop Cost: $900-$1,600 (parts + labor)

DIY Cost: $250-$650 (parts only)

You Save: $650-$950 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 4-6 hours.

---

🎯 Ready to get started?

HowToo makes it easy: same-day/2-day shipping on every part, plus all the tools and specialty tools you need! Check out the parts and tools sections below to add everything to your cart.