Removal Procedure

Fig 1: View Of Valve Cover Breather Tube

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fuel Pressure Notice in Cautions and Notices.

CAUTION: Refer to Battery Disconnect Caution in Cautions and Notices.

Fig 2: View Of Fuel Pressure Regulator

Courtesy of GENERAL MOTORS CORP.

Disconnect the positive crankcase ventilation (PCV) hose from the valve cover.
Disconnect the throttle cables from the throttle body and the bracket.
Remove the fuel pressure regulator. Refer to Fuel Pressure Regulator Replacement .
Disconnect the fuel return line at the fuel rail.
Disconnect the fuel inlet line at the fuel rail.
Remove the fuel rail retaining bolts.

Fig 3: View Of Fuel Rail

Courtesy of GENERAL MOTORS CORP.

CAUTION: Refer to Safety Goggles and Fuel Caution in Cautions and Notices.

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.

IMPORTANT: If an injector becomes separated from the rail and remains in the cylinder head, replace the injector O-ring seals and the retaining clip.

Remove the fuel rail with the fuel injector channel cover and the injectors attached.
Disconnect the fuel injector channel cover connectors.

Fig 4: Identifying Fuel Injector Retaining Clip

Courtesy of GENERAL MOTORS CORP.