Removal Procedure

Fig 1: Fuel Lines At Engine

Courtesy of GENERAL MOTORS CORP.

Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection .
Remove the fuel fill cap.
Remove the retainers from the fuel feed and return pipe quick connect fittings.

Fig 2: Blowing Dirt Out Of Fitting (Metal Collar)

Courtesy of GENERAL MOTORS CORP.

WARNING:

Wear safety glasses when using compressed air, as flying dirt particles may cause eye injury.

Fig 3: Quick Connect Locking Tabs (Metal Collar)

Courtesy of GENERAL MOTORS CORP.

Using the correct end of J 44581 Fuel Line Disconnect Tool for the size of the fitting. Insert J 44581 Fuel Line Disconnect Tool into the female connector, then push inward in order to release the locking tabs.
If the vehicle is a cab/chassis, it may be necessary to use J 43178 Fuel Line Disconnect Tool in order to release the quick connect fittings at the sending unit.

Fig 4: Releasing Quick Connect Locking Tabs (Metal Collar)

Courtesy of GENERAL MOTORS CORP.

Pull the connection apart.
Use a clean shop towel in order to wipe off the male end.
CAUTION:
If necessary, remove rust or burrs from the fuel pipes with an emery cloth. Use a radial motion with the fuel pipe end in order to prevent damage to the O-ring sealing surface. Use a clean shop towel in order to wipe off the male tube ends. Inspect all the connections for dirt and burrs. Clean or replace the components and assemblies as required.
Inspect both ends of the fitting for dirt and burrs. Clean or replace the components as required.