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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 361 (Automatic Transmission - 2ML70 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Transmission Fluid Cooler Flushing and Flow Test (J 45096) >> Forward Flush

Forward Flush

WARNING: This page is about a different car, the 2011 GMC Yukon, 2011 Chevrolet Tahoe, and 2011 Cadillac Escalade. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Black Supply Hose And Clear Waste Hose
    GM1762592Courtesy of GENERAL MOTORS CORP.
  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: Main Function Switch FLUSH Position
    GM1212343Courtesy of GENERAL MOTORS CORP.
  2. Turn the main function switch to the FLUSH position and allow machine to operate for 30 seconds.
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