For 1990-2009 cars only
Fuel Pressure Relief for Chevrolet Avalanche - 2WD 2003
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.- Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnection and Connection in Engine Electrical.
- Install the J 34730-1A . Refer to Fuel Pressure Gage Installation and Removal .
- Loosen the fuel fill cap in order to relieve fuel tank vapor pressure.
- Open the valve on J 34730-1A in order to bleed the system pressure. The fuel connections are now safe for servicing.
- Drain any fuel remaining in the gage into an approved container.
- Once the system pressure is completely relieved, remove the J 34730-1A .
