GM Service Manual Online
For 1990-2009 cars only

Removal Procedure

Tools Required

J 34730 , Fuel Pressure Gauge


    Object Number: 12275  Size: SH
  1. Clean the area around the fuel pressure connection.
  2. Relieve the fuel system pressure. Refer to Fuel Pressure Relief .
  3. Remove the fuel pressure connection valve (1) using a standard valve core removal and installation tool.

Installation Procedure


    Object Number: 12275  Size: SH
  1. Install the fuel pressure connection valve assembly using a standard valve core removal and installation tool.
  2. Install the fuel pressure connection valve cap (1).
  3. Tighten the fuel filler cap.
  4. Connect the negative battery cable. Refer to

    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.

    in Cautions and Notices.
  5. Inspect for leaks.
  6. 5.1. Turn the ignition switch ON for 2 seconds.
    5.2. Turn the ignition switch OFF for 10 seconds.
    5.3. Turn the ignition switch ON.
    5.4. Check for fuel leaks.