Back Flush Procedure

Connect the DT-45096-50 cooler flush adapter (1) to the vehicle transmission oil cooler supply and return lines at the transmission.

Fig 1: Cooler Flush Adapter
Courtesy of GENERAL MOTORS COMPANY
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.

Fig 2: View Of Black Supply Hose And Clear Waste Hose
Courtesy of GENERAL MOTORS COMPANY
Turn the main function switch to the FLUSH position. Allow the machine to operate for 30 seconds.

Fig 3: View Of Main Function Switch FLUSH Position
Courtesy of GENERAL MOTORS COMPANY
Turn the main function switch to the IDLE position and allow the supply vessel pressure to dissipate.

Fig 4: View Of Main Function Switch IDLE Position
Courtesy of GENERAL MOTORS COMPANY