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Home >> Chevrolet >> 2011 >> Impala LS, 3.9 M >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Automatic Transmission - 4T65-E - Symptom Troubleshooting & Diagnosis) >> Transmission Fluid Cooler Flushing and Flow Test (J-45096) >> Back Flush Procedure

Back Flush Procedure

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of J 45096 Adapter And Return Line
    GM1212336Courtesy of GENERAL MOTORS CORP.
  1. Connect the J-45096:  test tool adapters (1) to the vehicle's transmission oil cooler supply and return lines at the transmission.
    2. Fig 2: Identifying Black Supply Hose And 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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