For 1990-2009 cars

### Removal Procedure

1. Relieve the low side fuel system pressure. Refer to Fuel Pressure Relief.
2. Disconnect the fuel feed line quick connect fitting (1) from the fuel feed pipe. Refer to Metal Collar Quick Connect Fitting Service.
3. Loosen the fuel feed pipe fitting to the high pressure fuel pump.
4. Remove the fuel feed pipe bolts.
5. Remove the fuel feed pipe from the intake manifold.
6. Inspect the fuel feed pipe nut for damaged threads.
7. Inspect the fuel feed pipe sealing bail for damage or debris.
8. Replace the fuel feed pipe if any damage is found.

### Installation Procedure

1. Ensure that the fuel feed pipe and fuel pump fittings are clean prior to assembly.
2. Lubricate the fuel feed pipe and the high pressure fuel pump fittings with silicon free engine oil GM P/N 12345610 (Canadian P/N 993193) or equivalent.
3. Position the fuel feed pipe onto the intake manifold.
4. Install the fuel feed pipe fitting to the high pressure fuel pump hand tight.

Caution: Refer to Fastener Caution in the Preface section.

5. Install the fuel feed pipe bolts.

• | Tighten the bolts to 10 N·m (89 lb in).

• | Tighten the fitting to 30 N·m (22 lb ft).

6. Connect the fuel feed line quick connect fitting (1) to the fuel feed pipe. Refer to Metal Collar Quick Connect Fitting Service.
7. Inspect for leaks using the following procedure:

7.1. | Turn ON the ignition, with the engine OFF for 2 seconds.

7.2. | Turn OFF the ignition, for 10 seconds.

7.3. | Turn ON the ignition, with the engine OFF.

7.4. | Inspect for fuel leaks.

8. Install the low side fuel pressure service port cap.
9. Tighten the fuel fill cap.