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Home >> Isuzu >> 2007 >> Ascender 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 274 (Automatic Transmission - 4L60-E/4L65-E/4L70-E - Removal & Installation, Service, Overhaul, Troubleshooting & Diagnosis) >> Diagnostic Information and Procedures >> Transmission Fluid Cooler Flushing & Flow Test (J 45096) >> Forward Flush

Forward Flush

WARNING: This page is about a different car, the 2008 Isuzu Ascender, 2008 GMC Envoy, and 2008 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Black Supply Hose & Clear Waste Hose
    GM1212342Courtesy 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: View Of Main Function Switch FLUSH Position
    GM1212343Courtesy of GENERAL MOTORS CORP.
  3. Turn the main function switch to the FLUSH position and allow the machine to operate for 30 seconds.