Installation Procedure

Fig 1: Fuel Rail Assembly

Courtesy of GENERAL MOTORS CORP.

NOTE:

Use care when servicing the fuel system components, especially the fuel injector electrical connectors, the fuel injector tips, and the injector O-rings. Plug the inlet and the outlet ports of the fuel rail in order to prevent contamination.
Do not use compressed air to clean the fuel rail assembly as this may damage the fuel rail components.
Do not immerse the fuel rail assembly in a solvent bath in order to prevent damage to the fuel rail assembly.

Replace any damaged O-ring seals that were removed.
Lubricate the O-ring seals with clean engine oil.
Install the fuel rail assembly into the intake manifold. Tilt the fuel rail assembly slightly to install the injectors.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Fig 2: Identifying Lock Release

Courtesy of GENERAL MOTORS CORP.

Connect the fuel injector electrical connectors.
Push the slide locks (2) into position.
Connect the main fuel injector electrical harness connector.
Install the fuel feed pipe to the fuel rail.
Install the upper intake manifold. Refer to Intake Manifold Replacement - Upper in Engine Mechanical - 3.5L.
Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
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.