GM Service Manual Online
For 1990-2009 cars only

Removal Procedure


    Object Number: 260101  Size: SH

    Caution: Unless directed otherwise, the ignition and start switch must be in the OFF or LOCK position, and all electrical loads must be OFF before servicing any electrical component. Disconnect the negative battery cable to prevent an electrical spark should a tool or equipment come in contact with an exposed electrical terminal. Failure to follow these precautions may result in personal injury and/or damage to the vehicle or its components.

  1. Disconnect the negative battery cable.
  2. Remove the engine sight shield.
  3. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .

  4. Object Number: 350543  Size: SH
  5. Disconnect the fuel pressure regulator vacuum line.
  6. Clean any dirt from the fuel pressure regulator retainer and the surrounding area.
  7. Remove the fuel pressure regulator retainer (8).
  8. Remove the fuel pressure regulator (9) from the fuel pressure regulator housing.

Installation Procedure


    Object Number: 350543  Size: SH
  1. Install the backup ring (10) on the fuel pressure regulator (9).
  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 (8).
  8. Connect the fuel pressure regulator vacuum line.

  9. Object Number: 260101  Size: SH
  10. Connect the negative battery cable.
  11. Tighten the fuel filler cap.
  12. Inspect for leaks.
  13. 11.1. Turn ON the ignition for 2 seconds.
    11.2. Turn OFF the ignition for 10 seconds.
    11.3. Turn ON the ignition .
    11.4. Inspect for fuel leaks.
  14. Install the engine sight shield.