Forward Flush

Fig 1: Identifying Black Supply Hose & Clear Waste Hose

Courtesy of GENERAL MOTORS CORP.

Disconnect the supply and waste hoses from the vehicle cooler lines. Reverse the supply and waste hoses to provide a normal flow direction.

Fig 2: Setting Main Function Switch To FLUSH Position

Courtesy of GENERAL MOTORS CORP.

Turn the main function switch to the FLUSH position and allow machine to operate for 30 seconds.