Installation Procedure

Fig 1: View Of Fuel Return Pipe

Courtesy of GENERAL MOTORS CORP.

Lubricate the new O-ring with clean engine oil, then connect the O-ring and the engine fuel return pipe to the fuel pressure regulator.

Fig 2: Identifying Engine Fuel Feed Pipe

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Lubricate the new O-ring with clean engine oil, then connect the O-ring and the engine fuel feed pipe to the fuel rail.
Tighten: Tighten the engine fuel pipe fittings to 17 N.m (13 lb ft).

Fig 3: Locating Fuel Feed And Fuel Return Pipe Quick-Connect Fitting

Courtesy of GENERAL MOTORS CORP.

Reinstall the upper intake manifold assembly. Refer to Intake Manifold Replacement - Upper in Engine Mechanical.
Connect the quick-connect fittings in the engine compartment. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
Tighten the fuel fill cap.
Inspect for fuel leaks with the following procedure:
1. Turn ON the ignition for 2 seconds.
2. Turn OFF the ignition for 10 seconds.
3. Turn ON the ignition.
4. Inspect for fuel leaks.