Chevrolet 22878267 Tank Assembly, Fuel

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The fuel tank is plastic and cannot be repaired. There are no reliable repair procedures available to correct leaks or damage. The only approved service is fuel tank replacement. If there is sediment at the bottom of the tank, it should be steam-cleaned. The fuel pump/level sensor module and all EVAP system components should be removed prior to cleaning. It is important to allow the tank to air-dry thoroughly before returning it to service.

To remove the fuel tank, start by relieving the fuel system pressure and disconnecting the negative battery terminal. Then, raise the vehicle and secure it on jackstands. If necessary, remove the exhaust system underneath the fuel tank. Next, disconnect the EVAP system vent line and the fuel tank filler neck hose clamp. If the tank is not empty, siphon or pump out the remaining fuel. Disconnect the fuel supply line and EVAP purge line quick-connect fittings and remove the fuel tank shield. Support the fuel tank and remove the bolts securing the longitudinal straps. Lower the tank enough to access the fuel pump/fuel level sensor module and the EVAP canister, and disconnect the necessary connections. Finally, lower the tank completely. For installation, simply reverse the removal steps.

On newer models, the fasteners from the front of the right-rear inner fender splash shield should be removed and the electrical connector for the fuel pump module wiring harness should be unplugged.