GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2005 🢒 Epica 🢒 Engine 🢒 Engine Controls - 2.0L (L34 GMDAT) 🢒 Fuel Pressure Regulator Replacement

Removal Procedure

    Notice: Refer to Fuel Pressure Notice in the Preface section.


    Object Number: 1256148 Size: SH
  1. Relieve the fuel pressure. Refer to Fuel Pressure Relief .

    2. Caution: Refer to Battery Disconnect Caution in the Preface section.

  2. Disconnect the negative battery cable.
  3. Disconnect the intake air temperature (IAT) sensor connector.
  4. Disconnect the breather hose from the valve cover.
  5. Remove the air intake tube.
  6. Disconnect the vacuum hose from the fuel pressure regulator.

    7. Object Number: 1256150 Size: SH
  7. Remove the fuel pressure regulator retaining clamp.
  8. Remove the fuel pressure regulator by turning it back and forth and then pulling it out.
  9. Discard the O-ring.

Installation Procedure


    Object Number: 1256150 Size: SH
  1. Lubricate a new O-ring. Install the new O-ring onto the fuel pressure regulator body.
  2. Insert the fuel pressure regulator into the fuel rail body.

    3. Notice: Refer to Fastener Notice in the Preface section.

  3. Install the fuel pressure regulator retaining clamp.

    4. Tighten
    Tighten the fuel pressure regulator retaining clamp to 12 N·m (106 lb in).


    Object Number: 1256148 Size: SH
  4. Connect the vacuum hose to the fuel pressure regulator.
  5. Install the air intake tube.
  6. Connect the breather hose to the valve cover.
  7. Connect the IAT sensor connector.
  8. Connect the negative battery cable.
  9. Perform a leak test of the fuel pressure regulator with the engine off and the ignition ON.