Forward Flush

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of 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.