Installation Procedure

Fig 1: Locating Fuel Injector ID Number

Courtesy of GENERAL MOTORS COMPANY

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 COMPANY

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

Fig 3: Exploded View Of Fuel Rails & Injector Components

Courtesy of GENERAL MOTORS COMPANY

Push the fuel injector (17) into the fuel rail injector socket with the electrical connector facing outward. The retainer clip (19) locks on to a flange on the fuel rail injector socket.
Install the fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement .