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On The Ground

CAUTION: FUEL SUPPLY LINES WILL REMAIN PRESSURIZED FOR LONG PERIODS OF TIME AFTER THE ENGINE IS SHUTDOWN. THIS PRESSURE MUST BE RELIEVED BEFORE SERVICING THE FUEL SYSTEM.
  1. Relieve fuel system pressure. Refer to FUEL SYSTEM PRESSURE RELIEF .
    CAUTION: WHENEVER FUEL LINE FITTINGS ARE LOOSENED OR REMOVED, WRAP A SHOP CLOTH AROUND THE FITTING AND HAVE AN APPROVED CONTAINER AVAILABLE TO COLLECT ANY FUEL.
  2. Disconnect fuel feed line at fuel rail and install 3/8" x 1/4" quick connect from Fuel Flow/Pressure Adapter SA9127E-7 into fuel feed line.
  3. Connect suitable drain hose to other end of adapter and connect drain hose into a certified fuel handling cart.
  4. Connect Scan tool to vehicle and turn ignition On.
  5. Energize fuel pump using Scan tool. Refer to ENERGIZING THE FUEL PUMP .
  6. Pump out fuel until no more than 1/4 tank remains.
    Fig 1: Disconnecting fuel feed line at fuel rail
    G01039934Courtesy of GENERAL MOTORS CORP.
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