Installation ProcedureRemoval Procedure

CAUTION: Gasoline or gasoline vapors are highly flammable. A fire could occur if an ignition source is present. Never drain or store gasoline or diesel fuel in an open container, due to the possibility of fire or explosion. Have a dry chemical (Class B) fire extinguisher nearby.

CAUTION: Wrap a shop towel around the fuel pressure connection in order to reduce the risk of fire and personal injury. The towel will absorb any fuel leakage that occurs during the connection of the fuel pressure gage. Place the towel in an approved container when the connection of the fuel pressure gage is complete.

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

The fuel pipe connections
The hose connections
The areas surrounding the connections

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

Courtesy of GENERAL MOTORS CORP.

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

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.