Installation Procedure

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.

Lubricate the new lower injector O-ring seals with clean engine oil.
If replacing the fuel rail, install the fuel injectors. Refer to Fuel Injector Replacement .
Install the new O-ring seals on the spray tip end of each injector.

Fig 1: View Of Fuel Rail & Injector Assembly

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install the fuel rail attaching studs (2).
Tighten: Tighten the studs to 9 N.m (80 lb in).

Fig 2: View Of Fuel Injector & Electrical Connectors

Courtesy of GENERAL MOTORS CORP.

Fig 3: View Of Fuel Rail Quick-Connect Fitting, Fuel Feed Hose & Chassis Fuel Feed Pipe

Courtesy of GENERAL MOTORS CORP.

Connect the fuel feed and return pipes (2, 3) to the fuel rail. Refer to Quick Connect Fitting(s) Service (Metal Collar) .
Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Inspect for fuel leaks using the following procedures:
1. Turn ON the ignition, with the engine OFF for 2 seconds.
2. Turn OFF the ignition for 10 seconds.
3. Turn ON the ignition, with the engine OFF.
4. Inspect for fuel leaks.
Install the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement in Engine Mechanical.