Installation Procedure

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Fig 1: Locating Fuel Injector ID Number

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: When ordering new fuel injectors, be sure to order the correct injector for the application being serviced.

The fuel injector assembly (1) is stamped with a part number identification (2). A four digit build date code (3) indicates the month (4), day (5), year (6), and the shift (7) that built the injector.

Fig 2: View Of Fuel Injector, Clip & O-Rings

Courtesy of GENERAL MOTORS CORP.

Lubricate the new injector O-ring seals (2, 4) with clean engine oil.
Install the new injector O-ring seals on the fuel injector (3).
Install a new retainer clip (1) on the injector (3).

Fig 3: Installing Fuel Injector Harness (2) To Fuel Rail (1)

Courtesy of GENERAL MOTORS CORP.

Push the fuel injectors (3) into the fuel rail (1) injector socket with the electrical connector facing outward. The retainer clip locks on to a flange on the fuel rail injector socket.
Connect the fuel injector electrical harness (2) connectors to the fuel injectors (3).
Install the fuel rail assembly (1). Refer to Fuel Rail Assembly Replacement .