Chevrolet 19301258 Fuel Tank Fuel Pump Module Kit (Acdelco)

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To remove the fuel pump/fuel level sending unit module, start by relieving the system fuel pressure and equalizing tank pressure by removing the fuel filler cap. Then, disconnect the cable from the negative battery terminal and proceed to remove the fuel tank. Next, disconnect the fuel supply line from the fuel pump/module, being careful to soak up any spilled fuel. Mark the orientation of the fuel pump in relation to the fuel tank for proper realignment during installation. Use water pump pliers to unscrew the locknut, or use a hammer and brass punch if it's tight. Raise the fuel pump/module to disconnect the quick-connect fitting for the ventilation harness, and remove the assembly without damaging the fuel inlet strainer or the fuel level sensor float arm and float. For installation, inspect the O-ring and fuel pump inlet strainer, replacing if necessary. Insert the fuel pump/module into the tank, connecting the ventilation hose before locking it into place. Ensure proper alignment and avoid damaging any components. Finally, reverse the removal steps for installation.

The rest of the installation process involves reversing the removal steps, including cleaning and applying clean engine oil to the high-pressure fuel line fittings on the fuel rails.

Before installing the pump, remember to replace the O-ring.

If the fuel pump runs continuously, the PCM (Powertrain Control Module) may be defective.

The fuel pressure gauge should be connected to the Schrader valve-type test port on the fuel feed line.

Start by placing it on a clean workbench surface.