Back Flush Procedure

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Connect the J 45096 adapters (1) to the vehicle's transmission oil cooler supply and return lines at the transmission, may require J 35944-200 .

Fig 1: Connecting J 45096 Adapters To Transmission Oil Cooler Supply & Return Lines
Courtesy of GENERAL MOTORS CORP.
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: Connecting Black Supply Hose & Clear Waste Hose
Courtesy of GENERAL MOTORS CORP.
Turn the main function switch to the FLUSH position. Allow the machine to operate for 30 seconds.

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

Fig 4: Turning Main Function Switch To IDLE Position
Courtesy of GENERAL MOTORS CORP.