GM Service Manual Online
For 1990-2009 cars only

Special Tools

    • EN-48303 Fuel Filter Housing Holder
    • EN-48304 Fuel Filter Locker Installer/Remover

Removal Procedure

    Warning: Refer to Gasoline/Gasoline Vapors Warning in the Preface section.


    Object Number: 1863838  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection.
  2. Remove the beauty cover. Refer to Engine Cover Replacement.
  3. Remove the air cleaner assembly. Refer to Air Cleaner Assembly Replacement.

  4. Object Number: 1863906  Size: SH
  5. Disconnect the fuel inlet/outlet line from the fuel filter.
  6. Disconnect the fuel heater and temperature sensor connector (1).
  7. Disconnect the water in fuel sensor connector (2).
  8. Remove the fuel filter assembly from the bracket by lifting upward.

  9. Object Number: 1820506  Size: SH
  10. Install EN-48303 and EN-48304 (2) to the fuel filter assembly.
  11. Turn EN-48304 (1) counterclockwise.

  12. Object Number: 1820507  Size: SH
  13. Remove the fuel filter locker (5).
  14. Remove the fuel filter cap (4) with the O-ring (1).
  15. Note: Do not reuse the fuel filter element if the element is exposed to the air over a minute.

    Note: The fuel filter cap includes the fuel heater and temperature sensor as one body. Also, the fuel filter housing includes the water in fuel sensor as one body.

  16. Remove the fuel filter in the fuel filter housing (2).

Installation Procedure


    Object Number: 1820507  Size: SH

    Note: Do not touch the fuel filter element by hand to prevent fuel contamination.

  1. Install the fuel filter into the fuel filter housing (2).
  2. Install the fuel filter cap (6) with a new O-ring (1).
  3. Caution: Refer to Fastener Caution in the Preface section.

  4. Install the fuel filter locker (5) by using EN-48303 and EN-48304 and tighten to 30 N·m (22.1 lb ft).

  5. Object Number: 1863906  Size: SH
  6. Install the fuel filter to the bracket.
  7. Install the fuel filter bracket to the body using the bracket retaining nut and tighten to 10 N·m (88.5 lb ft).