Sierra 3500 4WD V8-8.1L VIN G (2006)
Fuel Pressure Release: Service and Repair
Fuel Pressure Relief Procedure
FUEL PRESSURE RELIEF PROCEDURE
TOOLS REQUIRED
J 34730-1A Fuel Pressure Gage
CAUTION: Relieve the fuel system pressure before servicing fuel system components in order to reduce the risk of fire and personal injury.
After relieving the system pressure, a small amount of fuel may be released when servicing the fuel lines or connections. In order to reduce the chance of
personal injury, cover the regulator and the fuel line fittings with a shop towel before disconnecting. This will catch any fuel that may leak out. Place the
towel in an approved container when the disconnection is complete.
1. Disconnect the negative battery cable.
2. Install the J 34730-1A.
3. Loosen the fuel fill cap in order to relieve fuel tank vapor pressure.
4. Open the valve on the J 34730-1A in order to bleed the system pressure. The fuel connections are now safe for servicing.
5. Drain any fuel remaining in the gage into an approved container.
6. Once the system pressure is completely relieved, remove the J 34730-1A.
