Installation Procedure

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

Fig 1: Locating Fuel Injector ID Number

Courtesy of GENERAL MOTORS CORP.

1. Lightly lubricate the new fuel injector O-ring seals (2, 4) with GM P/N 9981704.
2. Install the new fuel injector O-ring seals (2, 4) on the fuel injector (3).
3. Install a new retainer clip (1) to the fuel injector (3).
Fig 2: View Of Fuel Injector, Clip & O-Rings
Courtesy of GENERAL MOTORS CORP.
4. Push the fuel injector into the fuel rail injector socket with the electrical connector end facing outward. The retainer clip locks onto the flange of the fuel rail injector socket.
Fig 3: View Of Fuel Injector
Courtesy of GENERAL MOTORS CORP.
5. Connect the fuel injector harness connector to the fuel injector.
6. Install the fuel rail assembly. Refer to Fuel Rail Assembly Replacement .