Draining Procedure

Fig 1: Draining Fuel Tank

Courtesy of GENERAL MOTORS CORP.

Remove the fuel filler cap.
Install the J 42960-2 into the fuel fill pipe in order to hold the door open.
Insert the J 42960-1 into the fuel tank until the hose reaches the bottom of the fuel tank.
Use an air operated pump device in order to drain as much fuel through the fuel fill pipe as possible.