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Installation Procedure

Remove the caps from the fuel pipes.

Fig 1: View Of Fuel Return Pipe
Courtesy of GENERAL MOTORS CORP.
Lubricate the new O-ring with clean engine oil.
Install the O-ring and the engine fuel return pipe to the fuel pressure regulator.

Fig 2: Identifying Engine Fuel Feed Pipe

GM22505

Courtesy of GENERAL MOTORS CORP.

Lubricate the new O-ring with clean engine oil.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install 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).
Install the upper intake manifold assembly. Refer to Intake Manifold Replacement - Upper in Engine Mechanical.

Fig 3: View Of Quick-Connect Fittings

GM49740

Courtesy of GENERAL MOTORS CORP.

Connect the quick-connect fittings in the engine compartment. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
Tighten the fuel filler cap.
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.