GM 19332546 FILTER ASM,FUEL

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To remove and install the fuel filter on fuel injected engines, first depressurize the fuel system by removing the fuel pump fuse or disconnecting the fuel tank electrical harness connector. Then, disconnect the negative battery cable and remove the filter attaching nut at both ends of the filter assembly. Pull the filter out of the bracket and remove the sealing O-rings. Install the new filter into the bracket, using new O-rings for the fuel line connections. Tighten the connections and reconnect the negative battery cable.

If the fuel filter becomes clogged, it must be replaced.

A fuel pipe quick-connect separator tool (such as J37088 or equivalent) can be used to disconnect metal-type fittings from the fuel filter. The tool should be inserted into the female side of the connector, then pushed inward to release the locking tabs before pulling the connection apart.

Snap the new filter securely into the clip or install the filter mounting bolts, making sure the arrow on the filter points toward the engine.

A container, newspapers, or rags.

Be prepared to deal with residual fuel when loosening the fittings.

The cartridge gasket should be lightly oiled and a new filter should be placed into the housing. The housing should be tightened 2/3 of a turn after the gasket makes contact.

Use two wrenches to loosen the fuel lines and detach them from the filter.

Raise the vehicle and support it securely on jackstands.

One wrench steadies the filter while the other unscrews the fuel line nut.

The fuel filter is located inside the fuel inlet to the carburetor.

On carbureted models, the fuel filter is located inside the fuel inlet at the carburetor and is made of pleated paper that cannot be cleaned or reused. This job should be done with the engine cold, using open-end wrenches to fit the fuel line nuts and a replacement filter. The air cleaner assembly should be removed, and the fuel line located where it enters the carburetor. Rags should be placed under the fuel inlet fittings to catch spilled fuel, and the fuel line fitting should be loosened with a flare nut wrench. After the fuel line is disconnected, the fuel inlet filter nut can be unscrewed, being careful not to lose the thin washer-type gasket or the spring located behind the fuel filter. The old filter should be compared with the new one before installation. The new filter is placed in position behind the spring, with a rubber gasket and check valve at one end pointing away from the carburetor. A new washer-type gasket is installed on the fuel inlet filter nut and tightened securely. The fuel line is then reconnected, and the engine started to check for leaks. If leaks are found, the fuel line connector should be disconnected and checked for stripped or damaged threads. The air cleaner assembly is then reinstalled. Fuel-injected engines employ a stainless steel in-line fuel filter, located at various positions depending on the engine model. With the engine cold, a container is placed under the fuel filter, and the fuel lines are disconnected from each side of the filter. The fuel filter bracket is then removed, and a new filter installed. The fittings are tightened securely, and the ignition key turned on to check for leaks.