Installation Procedure

WARNING: This page is about a different car, the 2005 Buick LaCrosse and 2005 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

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

Fig 1: Locating Fuel Injector Assembly Identification, Manufacturing Date And Week Code Part Number

Courtesy of GENERAL MOTORS CORP.

The fuel injector assembly (1) is stamped with a part number identification (2), a manufacturing date (3), a week code (1), and a production plant number (4).

Fig 2: Locating Fuel Injector Components

Courtesy of GENERAL MOTORS CORP.

Coat all new O-rings with clean engine oil before installing
Install the fuel injector lower O-ring (4).
Install the fuel injector upper O-ring (2).
Install the fuel injector (3) to the fuel rail.
Install the fuel injector retaining clip (1).
Install the fuel rail. Refer to Fuel Rail Assembly Replacement .