Fuel Pressure Relief

Special Tools 

EN-34730-91  Pressure Tester

Equivalent regional tools:Special Tools (Diagnostic Tools)Special Tools (Removal and Installation) .

1. Battery Negative Cable Disconnection and Connection »Disconnect
Fig 1: View Of Fuel Pressure Tester
Courtesy of GENERAL MOTORS COMPANY
2. Remove the protective cap from the test connection.
3. Relieve the fuel pressure, using the EN-34730-91  tester (1).