GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 34730-1A Fuel Pressure Gage


    Object Number: 180378  Size: SH
  1. Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
  2. Connect the J 34730-1A to the fuel pressure connection. Refer to Fuel Pressure Gage Installation and Removal .
  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. Disconnect the fuel pressure gage from the fuel pressure connection. Refer to Fuel Pressure Gage Installation and Removal .