Installation Procedure

NOTE: Clean all of the following areas before performing any disconnections in order to avoid possible contamination in the system:

Install the J 34730-1A to the fuel pressure connection, located on the fuel rail.

Fig 1: Identifying Fuel Pressure Gauge J 34730-1A
Courtesy of GENERAL MOTORS CORP.

CAUTION: Do not drain the fuel into an open container. Never store the fuel in an open container due to the possibility of a fire or an explosion.
Place the bleed hose of the fuel pressure gage into an approved gasoline container.
Open the bleed valve on the fuel pressure gage in order to bleed the air from the gage.
Turn ON the ignition, with the engine OFF.
Command the fuel pump ON with a scan tool until all of the air is bled out of the gage.
Close the bleed valve on the fuel pressure gage.
Command the fuel pump ON with a scan tool.
Inspect for fuel leaks.