For 1990-2009 cars

### Removal Procedure

1. Relieve the fuel system pressure.
2. Drain the fuel tank. Refer to Fuel Tank Draining .
3. Disconnect the fuel return pipe from the engine. Refer to Metal Collar Quick Connect Fitting Service in Engine Controls - 8.1L.

Notice: Replace the EVAP pipes and hoses with the original equipment or parts that meet the GM specifications for those parts. The replacement EVAP pipe must have the same type of fittings as the original pipe in order to ensure the integrity of the connection. When replacing EVAP hoses, use only reinforced fuel-resistant hose identified with the word Fluoroelastomer or GM 6163-M on the hose. The inside hose diameter must match the outside pipe diameter. Do not use rubber hose within 100 mm (4 in) of any part of the exhaust system or within 254 mm (10 in) of the catalytic converter.

4. Disconnect the fuel feed pipe from the fuel filter. Refer to Metal Collar Quick Connect Fitting Service in Engine Controls - 8.1L.
5. Lower the fuel tanks, if required.
6. Disconnect the chassis fuel feed and return pipe from the flexible feed and return pipe. Refer to Metal Collar Quick Connect Fitting Service in Engine Controls - 8.1L.
7. Unclip the fuel pipe bundle retaining clips.
8. Remove the fuel pipes from the fuel bundle retaining clips.

### Installation Procedure

1. Position the fuel pipes to the fuel bundle retaining clips.
2. Fasten the fuel pipe bundle retaining clips
3. Connect the chassis fuel feed and return pipe to the flexible feed and return harness. Refer to Metal Collar Quick Connect Fitting Service in Engine Controls - 8.1L.
4. Install the fuel tank if required.
5. Connect the fuel feed pipes to the fuel filter. Refer to Metal Collar Quick Connect Fitting Service in Engine Controls - 8.1L.
6. Connect the fuel return pipe) to the engine. Refer to Metal Collar Quick Connect Fitting Service in Engine Controls - 8.1L.
7. Refill the tank.
8. Tighten the filler cap.
9. Connect the negative battery cable.
10. Inspect for leaks using the following procedure.