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Installation Procedure

CAUTION: Refer to Gasoline/Gasoline Vapors Caution in Cautions and Notices.
    Fig 1: Identifying Fuel Pressure Gauge J 34730-1A
    GM180378Courtesy of GENERAL MOTORS CORP.
  1. Remove the fuel injector sight shield. Refer to Fuel Injector Sight Shield Replacement (L36) or Fuel Injector Sight Shield Replacement (L67) in Engine Mechanical.
    2. NOTE: Refer to Fuel and Evaporative Emission (EVAP) Hose/Pipe Connection Cleaning Notice in Cautions and Notices.
  2. Remove the cap from the fuel pressure service connection.
    3. CAUTION: Refer to Fuel Gage Leak Caution in Cautions and Notices.
  3. Install the J 34730-1A  to the fuel pressure service connection, located on the fuel rail. See Special Tools . Wrap a shop towel around the fitting while connecting the J 34730-1A  to avoid spillage. See Special Tools .
  4. Turn the ignition ON, with the engine OFF.
    5. CAUTION: Refer to Fuel Storage Caution in Cautions and Notices.
  5. Place the bleed hose of the J 34730-1A  into an approved gasoline container. See Special Tools .
  6. Open the bleed valve on the J 34730-1A  in order to bleed the air from the fuel pressure gage. See Special Tools .
  7. Command the fuel pump ON with a scan tool.
  8. Close the bleed valve on the J 34730-1A  . See Special Tools .
  9. Inspect for fuel leaks.
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