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Home >> Chevrolet >> 2013 >> Sonic RS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 8 (Automatic Transmission - 6T30/6T40 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Transmission Fluid Cooler Flushing and Flow Test >> Forward Flush

Forward Flush

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    Fig 1: Identifying Supply And Waste Hoses
    GM1765261Courtesy of GENERAL MOTORS COMPANY
  1. Disconnect the supply and waste hoses from the vehicle cooler lines. Reverse the supply and waste hoses to provide a normal flow direction.
  2. Fig 2: View Of Main Function Switch FLUSH Position
    GM1212343Courtesy of GENERAL MOTORS COMPANY
  3. Turn the main function switch to the FLUSH position and allow machine to operate for 30 seconds.