GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2003 🢒 CTS - RHD 🢒 Engine 🢒 Engine Controls - 2.6L and 3.2L 🢒 Fuel Pressure Regulator Replacement

Removal Procedure

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

  1. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  2. Remove the air inlet grill in order to gain access to the fuel pressure regulator. Refer to Air Inlet Grille Panel Replacement in Body Front End.
  3. Place a shop towel under the fuel pressure regulator to absorb any lost fuel when removing the regulator.
  4. Disconnect the atmospheric vent hose from the fuel pressure regulator.

    5. Object Number: 818888 Size: SH
  5. Remove the fuel pressure regulator clamp bolt.
  6. Spread the clamp only enough to allow the fuel pressure regulator to be removed.

    7. Object Number: 818889 Size: SH
  7. Twist while pulling outward in order to remove the fuel pressure regulator from the fuel rail.

Installation Procedure

    Object Number: 818889 Size: SH
  1. Apply a few drops of clean engine oil to the O-ring seals on the fuel pressure regulator.

    2. Important: Be sure to locate the atmospheric vent toward the front of the engine on the fuel pressure regulator.

  2. Twist while pushing inward on the fuel pressure regulator, until fully seated against the fuel rail.
  3. Position the clamp around both the fuel pressure regulator and the fuel rail.

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


    Object Number: 818888 Size: SH
  4. Install the fuel pressure regulator clamp bolt.

    5. Tighten
    Tighten the fuel pressure regulator clamp bolt to 5 N·m (44 lb in).

  5. Install the atmospheric vent hose on to the fuel pressure regulator port.
  6. Using the scan tool turn ON the fuel pump to pressurize the system.
  7. Check for fuel leaks.
  8. Install the air inlet grill. Refer to Air Inlet Grille Panel Replacement in Body Front End.