GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 34730-1A Fuel Pressure Gage

Relief Procedure


    Object Number: 180378  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Connect J 34730-1A to the fuel pressure connection. In order to avoid spillage, wrap a shop towel around the fuel pressure connection while connecting the J 34730-1A .
  3. Install the bleed hose into an approved container and open the valve to bleed the system pressure. The fuel connections are now safe for servicing.
  4. Drain any fuel remaining in the J 34730-1A into an approved container.