GM 20965082 Fuel Tank Fuel Pump Module Kit (W/O Fuel Level Se

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To remove the secondary fuel tank module, start by detaching the cable from the negative battery terminal and relieving the fuel system pressure. Then, remove the fuel tank from the vehicle and spray the tangs of the module lock ring with penetrating oil. Disconnect the EVAP hose quick-connect fitting on the top of the module and use water pump pliers to remove the lock ring. If it's stuck, tap it with a hammer and brass punch. Disconnect the electrical connector and release the suction port tube to carefully pull out the module. For installation, inspect the o-ring and replace if necessary, then reverse the removal steps. To remove the primary fuel tank module, disconnect all electrical connectors from the module and pressure sensor. Use water pump pliers to remove the module lock ring, tapping it if needed. Release the lines from the top of the tank and carefully remove the module. Inspect the o-ring and replace if deteriorated, then install by reversing the removal process.

After completing those steps, you should loosen the fuel line fittings and disconnect the flexible fuel line and metal fuel lines from the high-pressure pump.

The electrical connector should be disconnected, and the suction port tube should be released. Then, the module can be carefully pulled out.

The first step is to relieve the fuel system pressure and disconnect the electrical connector.