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 4-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: View Of Fuel Rail & Related Components

Courtesy of GENERAL MOTORS COMPANY

Push the fuel injector (5) into the fuel rail pod with the electrical connector facing outwards. The retainer clip (4) locks on to a flange on the fuel rail injector socket.
Install the fuel rail assembly. Refer to Fuel Injection Fuel Rail Assembly Replacement .