Removal Procedure

WARNING: This page is about a different variant/trim than selected.

Fig 1: View Of Fuel Injector Insulator

Courtesy of GENERAL MOTORS CORP.

Disconnect the electrical harness from the fuel rail harness connection.
Remove the fuel injector noise insulator.

Fig 2: Identifying High Pressure Fuel Line

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WARNING: Fuel that flows out at high pressure can cause serious injury to the skin and eyes. ALWAYS depressurize the fuel system before removing components that are under high fuel pressure.

Remove and discard the high pressure fuel line.

Fig 3: View Of Fuel Rail & Injectors

Courtesy of GENERAL MOTORS CORP.

Disconnect all 4 fuel injector electrical connections.
Remove the fuel rail bolts.
Remove the fuel rail and injectors.

Fig 4: View Of J 2619-01, J-37281-A & Injector

Courtesy of GENERAL MOTORS CORP.

NOTE: A fuel injector may remain stuck in the cylinder head. If this occurs, complete the following steps:

Remove the fuel injector hold-down clamp before removing the fuel injector.

NOTE: Use the injector remover and slide hammer to pull the fuel injector straight out along the fuel injector axis. DO NOT tilt or twist the fuel injector during this process.

Use J-37281-A: remover and J 2619-01: hammer to remove the fuel injector.

Fig 5: Identifying High Pressure Fuel Pump & Bolts

Courtesy of GENERAL MOTORS CORP.

Remove the high pressure fuel pump bolts.
Remove the high pressure fuel pump.
Remove and discard the high pressure fuel pump gasket.
Remove and discard the high pressure fuel pump O-ring.

Fig 6: View Of High Pressure Fuel Pump Roller Lifter

Courtesy of GENERAL MOTORS CORP.

Remove the high pressure fuel pump roller lifter.