GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Generic 🢒 2008 🢒 Unit Repair 🢒 Engine 🢒 Engine Controls and Fuel - Ram-Jet 🢒 Fuel Pressure Regulator Replacement

Removal Procedure

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

  1. Disconnect the negative battery cable.
  2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief.

    3. Object Number: 665447 Size: SH
  3. Disconnect the fuel pressure regulator vacuum line (1).
  4. Clean any dirt from the fuel pressure regulator retainer and the surrounding area.

    5. Object Number: 705539 Size: SH
  5. Remove the fuel pressure regulator retainer (9).

    6. Remove the fuel pressure regulator (8) from the fuel pressure regulator housing.

Installation Procedure

    Object Number: 705539 Size: SH
  1. Install the backup ring (10) on the fuel pressure regulator (8).
  2. Install the new large O-ring (11) on the fuel pressure regulator.
  3. Install the regulator filter (12) on the fuel pressure regulator.
  4. Install the new small O-ring (13) on the fuel pressure regulator.
  5. Lubricate the fuel pressure regulator large O-ring and the small O-ring with clean engine oil.
  6. Push the fuel pressure regulator into the regulator housing on the fuel rail.
  7. Install a new fuel pressure regulator retainer (9).

    8. Object Number: 665447 Size: SH
  8. Connect the fuel pressure regulator vacuum line (1).
  9. Connect the negative battery cable.
  10. Inspect for leaks using the following procedure:
    11. 10.1. Ignition ON for 2 seconds.
    10.2. Ignition OFF for 10 seconds.
    10.3. Ignition ON, inspect for fuel leaks.