Removal Procedure

IMPORTANT: When servicing the fuel rail assembly, precautions must be taken to prevent dirt and other contaminants from entering the fuel passages. The fittings should be capped, and the holes should be plugged during servicing.

Remove the fuel injection sight shield. Refer to Fuel Injector Sight Shield Replacement (L36) or Fuel Injector Sight Shield Replacement (L67) in Engine Mechanical.
Relieve the fuel pressure from the fuel system. Refer to Fuel Pressure Relief Procedure .
Clean the fuel rail assembly and connections.

Fig 1: Removing/Installing Fuel Feed & Return Pipes (VIN 1)

Courtesy of GENERAL MOTORS CORP.

Remove the fuel feed, (2) and return pipes (1) from the fuel rail tubes. Refer to Quick Connect Fitting(s) Service (Metal Collar) .

Fig 2: Removing/Installing Vacuum Hose From Pressure Regulator (VIN 1)

Courtesy of GENERAL MOTORS CORP.

Disconnect the vacuum line from the fuel pressure regulator.
Disconnect the ignition coil wires from the retainer clips on top of super charger.
Remove the rear generator mounting bracket with the purge valve attached. Refer to Generator Replacement (L36) or Generator Replacement (L67) in Engine Electrical.
Remove the bypass valve actuator. Refer to Bypass Valve Actuator Replacement .

Fig 3: View Of Fuel Injector Electrical Connectors

Courtesy of GENERAL MOTORS CORP.

Depress the lock tab and disconnect the electrical connectors from the fuel injectors.
Remove the fuel injector electrical harness clips holding harness to front of fuel rail.

Fig 4: Removing/Installing Fuel Rail (VIN 1)

Courtesy of GENERAL MOTORS CORP.

Remove the fuel rail hold-down nuts.
Remove the fuel rail with equal force on both sides of the fuel rail.