🔧 Sequoia - Fuel Pump Replacement

On your Sequoia, the fuel pump is part of an in-tank fuel pump module. Replacing it means safely relieving fuel pressure, disconnecting the electrical connector and fuel lines, then removing the module from the tank and installing the new one with a new seal.

Difficulty Level: Advanced | Estimated Time: 3-6 hours

---

⚠️ Safety & Precautions

• ⚠️ Work outside or in a very well-ventilated area; fuel vapors are flammable.
• ⚠️ No smoking, no sparks, no hot work lights; use an LED work light.
• ⚠️ Keep a Class B fire extinguisher nearby.
• ⚠️ Wear safety glasses and fuel-resistant gloves; fuel can spray under pressure.
• ⚠️ Disconnect the negative battery cable before opening the fuel system.
• ⚠️ Clean dirt around openings; debris in the tank can ruin the new pump.

---

🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Class B fire extinguisher
• LED work light
• 10mm socket
• 12mm socket
• 14mm socket
• 3/8" drive ratchet
• 3/8" drive torque wrench
• Trim clip remover
• Flat-blade screwdriver
• Needle-nose pliers
• Fuel line disconnect tool set (specialty)
• Brass drift punch (specialty)
• Small hammer
• Shop rags
• Drain pan
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Transmission jack (specialty)
• Penetrating oil
• Marker pen

---

🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel pump module assembly - Qty: 1
• Fuel pump module tank seal / O-ring - Qty: 1
• Fuel line retaining clips - Qty: 1

---

📋 Before You Begin

• Park on level ground, set the parking brake, and chock the wheels.
• Run the fuel level low if possible; a lighter tank is much easier to handle.
• Open the fuel door and loosen the gas cap to help relieve tank vapor pressure.
• Quick question (so I give you the correct method): Do you have a removable access cover under the 2nd-row seat/cargo area that exposes the top of the fuel pump module, or is there no access cover (meaning the tank must be lowered)?

---

🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve fuel pressure

• Remove the fuel pump electrical connector or fuel pump fuse/relay (location varies by under-hood fuse box legend).
• Start the engine and let it run until it stalls.
• Crank the engine for 3-5 seconds to relieve any remaining pressure, then turn ignition OFF.

Step 2: Disconnect the battery

• Use a 10mm socket to disconnect the negative battery terminal.

Step 3: Choose your access method

• If you have an interior access cover: follow Steps 4A–9A.
• If you do NOT have an access cover: follow Steps 4B–12B (tank-lowering method).

Step 4A: Remove interior trim to reach the pump access cover

• Use a trim clip remover and flat-blade screwdriver to remove the needed seat cushion/trim fasteners.
• Lift the carpet/insulation to expose the metal access cover.
• Remove access cover fasteners with a 10mm socket.

Step 5A: Clean and disconnect lines/connectors at the module

• Blow/brush dirt away and wipe clean with shop rags.
• Disconnect the electrical connector by releasing the lock tab with a flat-blade screwdriver.
• Place shop rags under the fuel line connection.
• Disconnect the fuel line using a fuel line disconnect tool set (specialty). Expect a small fuel spill.

Step 6A: Remove the locking ring / retaining ring

• Mark the ring and tank alignment with a marker pen.
• Use a brass drift punch (specialty) and small hammer to rotate the lock ring off (brass helps avoid sparks).

Step 7A: Remove the fuel pump module

• Lift the module straight up carefully; angle it as needed to clear the float arm.
• Have a drain pan ready; fuel will drip from the module.
• Remove and discard the old tank seal/O-ring.

Step 8A: Install the new module and seal

• Install the new fuel pump module tank seal / O-ring into the tank groove.
• Lower the new module into place without pinching the seal.
• Reinstall the lock ring and tighten until the alignment marks line up.

Step 9A: Reconnect lines, reinstall access cover, and interior trim

• Reconnect the fuel line until it clicks; reinstall any retaining clips using needle-nose pliers if needed.
• Reconnect the electrical connector.
• Reinstall the access cover using a 10mm socket.
• Reinstall carpet/insulation and seat/trim fasteners using the correct 10mm socket / 12mm socket / 14mm socket as equipped.

Step 4B: Raise and support the Sequoia (tank-lowering method)

• Chock the front wheels using wheel chocks.
• Lift the rear with a floor jack (rated 3-ton minimum).
• Support the frame with jack stands (rated 3-ton minimum).

Step 5B: Support the fuel tank

• Position a transmission jack (specialty) under the fuel tank with a flat support surface.
• Use shop rags to help prevent slipping.

Step 6B: Disconnect connectors and fuel lines at the tank

• Disconnect the tank electrical connectors using a flat-blade screwdriver to release lock tabs.
• Disconnect fuel lines with a fuel line disconnect tool set (specialty) and catch fuel with a drain pan.

Step 7B: Remove tank straps and lower the tank slightly

• Apply penetrating oil to strap bolts if corroded.
• Use a 12mm socket / 14mm socket (as equipped) and 3/8" drive ratchet to remove the fuel tank strap bolts.
• Lower the tank slowly with the transmission jack (specialty), stopping to check for any lines still attached.

Step 8B: Clean the top of the tank and remove the lock ring

• Clean dirt away using shop rags.
• Mark alignment with a marker pen.
• Use a brass drift punch (specialty) and small hammer to remove the lock ring.

Step 9B: Remove and replace the fuel pump module

• Lift the module out carefully and drain into a drain pan.
• Remove and replace the tank seal/O-ring.
• Install the new module and reinstall the lock ring until marks align.

Step 10B: Raise tank and reinstall straps

• Lift the tank into position using the transmission jack (specialty).
• Start strap bolts by hand first, then tighten with a 12mm socket / 14mm socket and 3/8" drive ratchet.
• Tighten strap bolts using a 3/8" drive torque wrench to the factory specification for your Sequoia.

Step 11B: Reconnect lines and connectors

• Reconnect fuel lines until they click; reinstall any clips using needle-nose pliers.
• Reconnect electrical connectors.

Step 12B: Lower vehicle

• Raise slightly with the floor jack (rated 3-ton minimum), remove jack stands (rated 3-ton minimum), then lower fully.

---

✅ After Repair

• Reconnect the battery negative terminal using a 10mm socket.
• Prime the system: turn ignition ON for 5 seconds, OFF for 5 seconds; repeat 3 times.
• Start the engine and check carefully for leaks at every fuel connection.
• If you smell raw fuel or see seepage: shut it off and fix before driving.
• Clear any stored codes and verify fuel pressure/operation if you have a scan tool.

---

💰 DIY vs Shop Cost

Shop Cost: $900-$1,800 (parts + labor)

DIY Cost: $350-$900 (parts only)

You Save: $550-$900 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-6 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.