Assumption: This procedure is for the in-tank fuel pump module on your Silverado.

🔧 Fuel Pump - Replacement

The fuel pump is inside the fuel tank, so the tank usually has to be lowered to replace it. This job involves fuel pressure, fuel vapor, and a large tank, so plan ahead and work slowly.

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

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⚠️ Safety & Precautions

• Work outside or in a very well-ventilated area. Fuel vapor is flammable.
• Disconnect the negative battery cable before opening the fuel system.
• Relieve fuel pressure before removing any fuel line.
• Keep sparks, cigarettes, and open flames away from the truck.
• Support the fuel tank securely before loosening straps. A full tank is very heavy.
• Use a fuel-safe drain pan and clean up spills immediately.
• Wear safety glasses and fuel-resistant gloves.

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🔧 Required Tools

You'll need the following tools for this repair:

• Safety glasses
• Fuel-resistant gloves
• Floor jack (rated 3-ton minimum)
• Jack stands (rated for truck weight)
• Wood block
• Ratchet
• 10mm socket
• 13mm socket
• 15mm socket
• Flat-blade screwdriver
• Fuel line quick-disconnect tool
• Torque wrench
• Brass drift or fuel pump lock ring tool (specialty)
• Shop towels
• Drain pan
• Trim removal tool

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🔩 Required Parts

HowToo sells all the parts you need for this repair:

• Fuel pump module - Qty: 1
• Fuel tank module seal - Qty: 1
• Fuel filter - Qty: 1
• Fuel line clips - Qty: 1 set

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📋 Before You Begin

• Park on level ground and set the parking brake.
• If the fuel tank is full, drive until it is lower if possible. Less fuel makes the tank much easier to handle.
• Disconnect the negative battery cable using a 10mm socket.
• Relieve fuel pressure at the fuel rail service port if equipped, or by disabling the fuel pump and cranking briefly.
• Keep the fuel tank as empty as possible.

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🔨 Step-by-Step Instructions

Follow these steps in order:

Step 1: Relieve fuel system pressure

• Use a fuel line quick-disconnect tool only after pressure is relieved.
• If equipped with a Schrader valve on the fuel rail, carefully release pressure into a shop towel.
• If no service port is available, disable the fuel pump relay, then crank the engine briefly until it stalls.

Step 2: Disconnect the battery

• Use a 10mm socket to remove the negative battery cable.
• Move the cable aside so it cannot spring back and reconnect.

Step 3: Raise and support the truck

• Use a floor jack and jack stands to safely lift and support the rear of the truck.
• Keep the truck stable before working under it.

Step 4: Support the fuel tank

• Place the floor jack with a wood block under the fuel tank.
• Raise the jack slightly until the tank is supported.
• Do not crush the tank.

Step 5: Remove the tank straps

• Use a 15mm socket to remove the fuel tank strap bolts.
• Lower the straps and keep track of the hardware.

Step 6: Lower the tank enough to access the top

• Lower the fuel tank slowly with the jack.
• Disconnect the electrical connector and fuel lines on top of the tank using the fuel line quick-disconnect tool.
• Be ready for a small amount of fuel spill.

Step 7: Remove the fuel tank

• Lower the tank fully and slide it out from under the truck.
• Set it on a clean, stable surface.

Step 8: Remove the fuel pump module

• Clean dirt from the top of the tank before opening it.
• Use a brass drift or fuel pump lock ring tool (specialty) to turn the lock ring counterclockwise.
• Lift the fuel pump module straight out of the tank.
• Remove the old seal and discard it.

Step 9: Install the new fuel pump module

• Install the new fuel tank module seal in the tank opening.
• Lower the new fuel pump module into the tank in the same orientation as the old one.
• Install the lock ring and tighten it until fully seated.
• Make sure the seal stays centered.

Step 10: Reinstall the tank

• Slide the tank back under the truck and raise it with the jack.
• Reconnect the fuel lines and electrical connector.
• Use a 15mm socket to reinstall the tank straps.
• Tighten the tank strap bolts to 40 Nm (30 ft-lbs).

Step 11: Reconnect the battery and prime the system

• Use a 10mm socket to reconnect the negative battery cable.
• Cycle the key to ON for 5 seconds, then OFF, 3 to 4 times.
• This primes the fuel system before cranking.

Step 12: Check for leaks and start the engine

• Start the engine and let it idle.
• Inspect the tank top, fuel lines, and rail area for leaks.
• If the engine does not start, recheck electrical connectors and fuel line locks.

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✅ After Repair

• Drive the truck and confirm normal throttle response and no fuel leaks.
• Check for fuel smell around the tank after the first drive.
• If the check engine light was on before the repair, clear codes with a scan tool.

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💰 DIY vs Shop Cost

Shop Cost: $900-$1,500 (parts + labor)

DIY Cost: $250-$600 (parts only)

You Save: $350-$900 by doing it yourself!

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

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🎯 Ready to get started?

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