GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Notice: Use care in removing the fuel injectors in order to prevent damage to the fuel injector electrical connector pins or the fuel injector nozzles. Do not immerse the fuel injector in any type of cleaner. The fuel injector is an electrical component and may be damaged by this cleaning method.


    Object Number: 351185  Size: SH

    Important: The engine oil may be contaminated with fuel if the fuel injectors are leaking.

  1. Remove the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .
  2. Remove and discard the fuel injector retaining clip (1).
  3. Remove the injector (5) from the fuel rail.
  4. Remove and discard the injector O-ring seals (2, 4) from both ends of the injector.

Installation Procedure


Object Number: 351196  Size: SH

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

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 shift (7) that built the injector.


    Object Number: 351185  Size: SH
  1. Lubricate the NEW injector O-ring seals (2, 4) with clean engine oil.
  2. Install the NEW injector O-ring seals onto the injector.
  3. Install a NEW retaining clip (1) on the injector.
  4. Push the fuel injector (5) into the fuel rail with the electrical connector facing outwards. The retaining clip (4) locks onto a flange on the fuel rail injector socket.
  5. Install the fuel rail. Refer to Fuel Injection Fuel Rail Assembly Replacement .