🔧 Trax - Fuel Pump Replacement

On your Trax, the fuel pump is an in-tank module that supplies pressurized fuel to the engine. Replacement usually involves removing the rear seat area service cover (if equipped) to access the pump from inside the cabin, then swapping the module and seal.

Difficulty Level: Intermediate | Estimated Time: 2-4 hours

Quick check (so I guide you correctly): Do you see a metal access cover under the rear seat bottom cushion? Also, are you replacing the whole pump module (recommended) or just diagnosing a no-start?

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⚠️ Safety & Precautions

• Work outdoors or in a very well-ventilated area—fuel vapors are flammable.
• No smoking, no open flames, and keep a fire extinguisher nearby.
• Relieve fuel pressure before disconnecting any fuel lines to prevent spray.
• Disconnect the negative battery cable to avoid accidental sparks.
• Clean dirt away from the pump area before opening the tank to keep debris out.
• If you do not have an in-cabin access cover on your Trax, the fuel tank typically must be lowered—stop and tell me, and I’ll give you the correct tank-lowering procedure for AWD.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Nitrile gloves
• Fire extinguisher (Class B)
• Floor jack (rated 3-ton minimum)
• Jack stands (rated 3-ton minimum)
• Wheel chocks
• Trim removal tool set
• Flat-blade screwdriver
• Ratchet
• 8mm socket
• 10mm socket
• Fuel line quick-disconnect tool set
• Brass punch
• Small hammer
• Fuel pump lock ring wrench (specialty)
• Shop rags
• Catch pan
• Torque wrench (3/8" drive)

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🔩 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/gasket) - Qty: 1
• Fuel pump lock ring - Qty: 1 (only if damaged/corroded)

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📋 Before You Begin

• Park on level ground, set the parking brake, and chock the wheels.
• Lower the fuel level if possible (¼ tank or less makes this cleaner and safer).
• Have plenty of rags ready—some fuel spillage is normal.
• Learn two terms: the “lock ring” is the large ring that holds the pump in the tank; a “quick-connect” is the push-on fuel line fitting that releases with a disconnect tool.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve fuel pressure

• Open the hood and locate the underhood fuse/relay box (driver side area).
• Remove the fuel pump relay using a trim removal tool set or your fingers (pull straight up).
• Start the engine and let it run until it stalls; crank for 2-3 more seconds to bleed off remaining pressure.
• Turn ignition OFF and remove the key.

Step 2: Disconnect the battery

• Use a 10mm socket and ratchet to disconnect the negative battery cable and move it aside.

Step 3: Access the pump (in-cabin access cover method)

• Fold the rear seatbacks down.
• Remove the rear seat bottom cushion (release the front clips by pulling up firmly; use a trim removal tool set if needed). Pull up near each front corner.
• Locate the round/oval service cover and remove fasteners using an 8mm socket and ratchet (or use a flat-blade screwdriver if it’s a clip type).

Step 4: Clean and disconnect electrical connector

• Use shop rags to wipe dirt away from the top of the module area before opening anything.
• Unplug the pump electrical connector by releasing the lock tab using a flat-blade screwdriver (gentle pressure).

Step 5: Disconnect the fuel lines

• Place a catch pan and shop rags under the connections.
• Use the fuel line quick-disconnect tool set to release each quick-connect fitting, then pull the line straight off.
• Cap/cover the open lines with clean rags to keep dirt out.

Step 6: Remove the lock ring

• Mark the orientation of the module and lock ring to the tank with a marker (helps alignment on install).
• Use a fuel pump lock ring wrench (specialty) to loosen and remove the lock ring.
• If space is tight, you can carefully use a brass punch and small hammer to tap the ring loose. Brass is used because it’s less likely to spark than steel.

Step 7: Remove the fuel pump module

• Lift the module straight up slowly; angle it as needed to clear the float arm.
• Let fuel drain into the tank, then set the module into a catch pan.
• Remove the old tank seal (O-ring) and discard it.

Step 8: Install the new seal and new module

• Install the new tank seal (O-ring) into the tank groove; make sure it sits flat and is not twisted.
• Lower the new module into the tank in the same orientation as the old one (use your alignment marks).
• Install the lock ring and tighten using the fuel pump lock ring wrench (specialty) until fully seated and aligned to your marks (do not cross-thread or cock the ring).

Step 9: Reconnect fuel lines and electrical

• Reconnect fuel lines by pushing each quick-connect on until it clicks; lightly tug to confirm it’s locked.
• Reconnect the electrical connector until it clicks.

Step 10: Reinstall the service cover and seat

• Reinstall the service cover and tighten fasteners using an 8mm socket and ratchet.
• Reinstall the rear seat bottom cushion by aligning the rear hooks, then push down at the front until the clips snap in.

Step 11: Prime the system and check for leaks

• Reconnect the negative battery cable using a 10mm socket and ratchet.
• Reinstall the fuel pump relay.
• Turn ignition ON (do not start) for 5 seconds, then OFF for 10 seconds; repeat 3 times to prime.
• Start the engine and inspect for leaks around the pump cover area and along the fuel line connections.

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✅ After Repair

• Let the engine idle for a few minutes and re-check for fuel smell or wetness.
• Road test for 10-15 minutes, then re-check again for leaks.
• If the check engine light turns on, scan for codes—an EVAP/fuel pressure code can happen if a connector or seal isn’t seated.

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💰 DIY vs Shop Cost

Shop Cost: $700-$1,300 (parts + labor)

DIY Cost: $200-$550 (parts only)

You Save: $150-$1,000 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 2-4 hours.

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🎯 Ready to get started?

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