🔧 Equinox - Fuel Pump Replacement

Your Equinox has two fuel pumps: a low-pressure in-tank pump inside the fuel tank and a high-pressure pump mounted on the engine. The replacement steps are very different for each.

Difficulty Level: Advanced | Estimated Time: 3-6 hours (depending on pump)

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⚠️ Safety & Precautions

• 🔥 Gasoline is very flammable—work in a well-ventilated area away from sparks, flames, and smoking.
• ⚡ Disconnect the negative battery cable before starting to avoid sparks and accidental cranking.
• 🧯 Keep a class B fire extinguisher nearby in case of fuel ignition.
• 🫧 Fuel system is pressurized—relieve pressure before opening any fuel line to avoid spray into eyes/skin.
• 📏 Support the vehicle safely on jack stands if you raise it; never rely only on a jack.
• 🧤 Wear safety glasses and fuel-resistant gloves; gasoline can irritate skin and eyes.

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🔧 Required Tools

You'll need the following tools for this repair:

• Socket set (8mm-19mm)
• Ratchet wrench 3/8"
• Extension bar 3/8"
• Torque wrench 3/8" drive
• Flathead screwdriver medium
• Phillips screwdriver medium
• Fuel line quick-disconnect tool set (specialty)
• Plastic fuel tank lock ring tool (specialty)
• Trim removal tool plastic
• Floor jack rated 3-ton minimum
• Jack stands rated 3-ton minimum
• Wheel chocks rubber
• Shop rags
• Drain pan fuel-safe
• Safety glasses
• Nitrile gloves

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel pump module (in-tank, with fuel level sensor) - Qty: 1
• Fuel pump module sealing ring - Qty: 1
• Fuel pump module lock ring - Qty: 1
• Fuel line O-rings - Qty: 2-4
• Dielectric grease - Qty: 1 small tube
• Brake cleaner or parts cleaner (for cleaning spilled fuel) - Qty: 1 can

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📋 Before You Begin

• Park your Equinox on a level surface, set the parking brake, and place wheel chocks behind the rear wheels.
• Run the fuel level down as low as possible; a nearly empty tank is much lighter and safer to work with.
• Disconnect the negative battery terminal using a 10mm socket.
• Relieve fuel system pressure: remove the fuel pump fuse and start the engine; let it stall, then crank for 5 seconds more.
• Work with doors and windows open or outdoors to avoid breathing fuel vapors.

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🔨 Step-by-Step Instructions

Follow these steps in order:

This procedure covers the in-tank fuel pump module, which is the usual failure on this model.

Step 1: Prepare and lift the vehicle

• Use a floor jack rated 3-ton minimum to lift the rear of your Equinox at the designated rear jacking points.
• Place jack stands rated 3-ton minimum under the rear pinch welds or frame points and lower the vehicle onto them.
• Keep the floor jack lightly supporting the rear subframe as extra safety if possible.

Step 2: Remove fuel pump fuse and relieve pressure

• Open the interior fuse panel (left side of dash) with a trim removal tool plastic if needed.
• Locate the fuel pump fuse (refer to fuse box cover diagram) and pull it out with your fingers or needle-nose pliers if available.
• Reconnect the battery temporarily with a 10mm socket, start the engine, and let it run until it stalls.
• Crank for another 5 seconds, then disconnect the battery negative again with the 10mm socket.

Step 3: Access the fuel tank from below

• Slide under the rear of the vehicle on a creeper or cardboard.
• Identify the fuel tank in the middle rear under the vehicle; it is a large plastic container.
• Support the tank using the floor jack and a piece of wood to spread the load.

Step 4: Disconnect fuel lines and electrical connectors

• Locate the fuel lines and electrical connectors at the front-top area of the tank.
• Use a flathead screwdriver medium to gently release any plastic tabs on the line holders.
• Use the fuel line quick-disconnect tool set (specialty) to disconnect the fuel lines from the body-side pipes.
• Unplug the electrical connectors by pressing tabs with your fingers or a flathead screwdriver medium.
• Catch any fuel drips in the drain pan.

Step 5: Remove fuel tank straps

• Locate the two metal straps holding the tank up.
• Use a 15mm socket and ratchet wrench 3/8" to remove the strap bolts at the rear.
• Slowly lower the floor jack to drop the tank just enough to reach the top, keeping it supported.
• Do not let any lines or wires stretch.

Step 6: Lower and remove the fuel tank

• Double-check all lines and connectors are disconnected.
• Lower the floor jack further until you can slide the tank out from under the vehicle.
• Carefully move the tank to a clean, flat work area.

Step 7: Remove the fuel pump module lock ring

• Clean the top of the tank around the pump module with a rag to keep dirt out.
• Use the plastic fuel tank lock ring tool (specialty) and a ratchet wrench 3/8" or appropriate driver to turn the lock ring counterclockwise.
• Remove the lock ring and lift it away.

Step 8: Remove the old fuel pump module

• Carefully lift the pump module straight up; tip it slightly to get the float arm out of the opening.
• Drain fuel from the old module into the drain pan fuel-safe.
• Remove and discard the old sealing ring from the tank opening.

Step 9: Install new sealing ring and fuel pump module

• Place the new fuel pump module sealing ring into the groove on the tank opening.
• Lower the new fuel pump module into the tank, guiding the float arm carefully.
• Align the marks on the pump module flange with the marks on the tank (if present).

Step 10: Reinstall lock ring

• Place the new or cleaned fuel pump module lock ring over the module.
• Use the plastic fuel tank lock ring tool (specialty) to turn the ring clockwise until it seats fully.
• Torque to 60 Nm (44 ft-lbs) using a torque wrench 3/8" drive if your tool allows.

Step 11: Reinstall fuel tank

• Position the tank back on the floor jack and roll it under the vehicle.
• Raise it slowly into place, guiding the front first.
• Reinstall the tank straps with the 15mm socket and ratchet wrench 3/8".
• Torque strap bolts to 25 Nm (18 ft-lbs) with the torque wrench 3/8" drive.

Step 12: Reconnect fuel lines and electrical connectors

• Reconnect all electrical connectors until they click; apply a tiny amount of dielectric grease to seals if desired.
• Reconnect fuel lines using the fuel line quick-disconnect tool set (specialty) and ensure they click firmly.
• Secure any plastic retainers or clips using a flathead screwdriver medium if needed.

Step 13: Lower the vehicle

• Raise the rear slightly with the floor jack, remove the jack stands, then lower the vehicle to the ground.
• Remove the wheel chocks rubber.

Step 14: Reconnect battery and prime the fuel system

• Reinstall the fuel pump fuse in the interior fuse box.
• Reconnect the negative battery terminal using a 10mm socket.
• Turn the ignition to ON (engine off) for 5 seconds, then OFF. Repeat 3-4 times to prime the fuel system.

Step 15: Start the engine and check for leaks

• Start the engine and let it idle.
• Inspect under the vehicle for any fuel leaks around the tank area and fuel lines.
• Wipe any spilled fuel with shop rags and clean with brake cleaner or parts cleaner if needed.

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✅ After Repair

• Verify the fuel gauge reads correctly; if it seems off, the pump module float may be misaligned.
• Take a short test drive, watching for normal power and no hesitation.
• Re-check under the vehicle for leaks after your test drive.

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💰 DIY vs Shop Cost

Shop Cost: $700-$1,000 (parts + labor)

DIY Cost: $200-$350 (parts only)

You Save: $350-$800 by doing it yourself!

Shop labor rates vary but typically run $100-$150/hour. This repair takes a shop approximately 3-4 hours.

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🎯 Ready to get started?

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