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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) >> Back Flush Procedure

Back Flush Procedure

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 J 45096 Adapters At Oil Cooler Supply & Return Lines
    GM1212336Courtesy of GENERAL MOTORS CORP.
  1. Connect the J 45096  adapters (1) to the vehicle transmission oil cooler supply and return lines at the transmission, may require J 35944-200  . See Special Tools .
    2. Fig 2: Identifying Black Supply Hose & Clear Waste Hose
    GM1212338Courtesy of GENERAL MOTORS CORP.
  2. Connect the black supply hose (1) to the return line, top connector of the transmission, and the clear waste hose (2) to the feed line, bottom connector of the transmission, to the vehicle cooler lines. This is the reverse flow backflush direction.
    3. Fig 3: View Of Main Function Switch FLUSH Position
    GM1212339Courtesy of GENERAL MOTORS CORP.
  3. Turn the main function switch to the FLUSH position. Allow the machine to operate for 30 seconds.
    4. Fig 4: View Of Main Function Switch IDLE Position
    GM1212341Courtesy of GENERAL MOTORS CORP.
  4. Turn the main function switch to the IDLE position and allow the supply vessel pressure to dissipate.
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