GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 1876570  Size: SH

    Note: An 8-digit part identification number is on a mylar label affixed to the fuel meter body. Refer to this number if servicing or part replacement is required.

  1. Remove the upper intake manifold. Refer to Upper Intake Manifold Replacement.
  2. Reposition both sides of the fuel meter body bracket (1) until the tabs disengage from the fuel meter body, and lift the fuel meter body up.

  3. Object Number: 1876571  Size: SH
  4. Remove and discard the fuel meter body seal.
  5. Caution: Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.

  6. Prior to removal, clean the fuel meter body with a spray type engine cleaner, such as GM X-30A, or equivalent, if necessary. Follow the package instructions. Do not soak the fuel meter body in liquid cleaning solvent.
  7. Note: When removing the injectors, mark the injectors with tape and their corresponding cylinder number in order to ensure correct injector placement upon installation.

  8. Lightly pull on the fuel injector tube, and using a small pocket screwdriver, remove the fuel injector from the lower intake manifold bore.
  9. Note: During the removal of the fuel meter body, the retainers that hold the injectors into the intake manifold may become worn. This is OK. Upon installation of the intake manifold, the injectors will be held fully seated, thus keeping them from backing out of the lower intake manifold.

  10. Remove the other 5 fuel injectors from the lower intake manifold bores.
  11. Caution: Cover the injector sockets in order to prevent dirt and other contaminants from entering the open fuel passages.

  12. Remove the fuel meter body from the vehicle.

Installation Procedure


    Object Number: 859867  Size: SH

    Note: All injector lines must face forward as the fuel meter body is snapped into the bracket. Also, the number 3 fuel tube must be positioned behind the number 1 fuel tube in order to eliminate interference with the upper intake manifold when installed.

  1. Position the fuel tubes of the fuel meter body in the forward position.
  2. Install the fuel meter body into the fuel meter body bracket on the lower intake manifold.
  3. Install the 6 injectors into the proper lower intake manifold bores in proper sequence (5, 1, 3, 2, 4, 6).
  4. Inspect the injectors in order to ensure that they are firmly seated and locked in the lower intake manifold bores.
  5. Ensure that the electrical connections of the injectors are positioned so that they do not interfere with each other, and are pointing towards the center of the intake manifold. Rotate the electrical connections inboard if necessary. Also, ensure there is no tension on the injector wires.
  6. Install the upper intake manifold. Refer to Upper Intake Manifold Replacement.
  7. Tighten the fuel fill cap.
  8. Connect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  9. Test for fuel leaks using the following procedure:
  10. 9.1. Turn the ignition ON, with the engine OFF, for 2 seconds.
    9.2. Turn the ignition OFF for 10 seconds.
    9.3. Turn the ignition ON, with the engine OFF.
    9.4. Inspect for fuel leaks.