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Home >> GMC >> 2018 >> Acadia Denali, FWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 194 (Automatic Transmission Cooling System) >> Diagnostic Information and Procedures >> Transmission Fluid Cooler Flow Test and Flushing (Tremec 6-Speed) >> Forward Flush

Forward Flush

WARNING: This page is about a different car, the 2017 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Black Supply Hose And Clear Waste Hose
    GM1212342Courtesy 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
  2. Turn the main function switch to the FLUSH position and allow the machine to operate for 30 seconds.
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