LEMON Manuals: Even more car manuals for everyone
Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 506 (Automatic Transmission - 6L80/6L90 - Diagnostic Information And Procedures) >> Diagnostic Information and Procedures >> Transmission Fluid Cooler Flushing and Flow Test >> Back Flush Procedure

Back Flush Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying J 45096-30
    GM1762577Courtesy of GENERAL MOTORS COMPANY
  1. Connect the DT 45096-30  cooler flush adapter (1) to the vehicle transmission oil cooler supply and return lines at the transmission.
    2. Fig 2: Identifying Black Supply Hose & Clear Waste Hose
    GM1762584Courtesy of GENERAL MOTORS COMPANY
  2. Connect the black supply hose (1) to the return line, bottom connector of the transmission, and the clear waste hose (2) to the feed line, top 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 COMPANY
  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 COMPANY
  4. Turn the main function switch to the IDLE position and allow the supply vessel pressure to dissipate.
scientia non olet · About LEMON Manuals