Installation Procedure

Tools Required

J 34730-1A Fuel Pressure Gage. See Special Tools and Equipment .

CAUTION: Refer to Gasoline/Gasoline Vapors Caution in Cautions and Notices.

CAUTION: Refer to Fuel Gage Leak Caution in Cautions and Notices.

Fig 1: Identifying Fuel Pressure Gauge J 34730-1A

Courtesy of GENERAL MOTORS CORP.

Remove the engine sight shield. Refer to Engine Sight Shield Replacement (4.8L, 5.3L, and 6.0L (RPO LQ4)) or Engine Sight Shield Replacement (6.0L (RPO LQ9)) in Engine Mechanical-4.8L, 5.3L, and 6.0L.
Remove the fuel rail pressure fitting cap.
Connect the J 34730-1A to the fuel pressure valve. See Special Tools and Equipment . Wrap a shop towel around the fitting while connecting the gage in order to avoid spillage.
Install the bleed hose on J 34730-1A into an approved container. See Special Tools and Equipment .