Transmission Cooling: Notes

The transmission fluid cooling system, without an auxiliary transmission fluid cooler, consists of:

• an in-tank fluid cooler inlet tube.
• a non-repairable in-tank transmission fluid cooler.
• an in-tank fluid cooler return tube.

The transmission fluid cooling system, with an auxiliary transmission fluid cooler, consists of:

• an in-tank fluid cooler inlet tube.
• a non-repairable in-tank transmission fluid cooler.
• fluid cooler hoses.
• hose clamps.
• an auxiliary transmission fluid cooler.
• a fluid cooler return tube.

The transmission fluid flows from the transmission (front fitting for TorqShift®, bottom fitting for the 4R75E), to the in-tank transmission fluid cooler, to the auxiliary transmission fluid cooler (if equipped) and returns to the transmission (rear fitting for TorqShift®, top fitting for 4R75E).

For the Transmission Fluid Cooler Backflushing and Cleaning procedures, refer to AUTOMATIC TRANSAXLE/TRANSMISSION - 4R70E/4R75E or AUTOMATIC TRANSAXLE/TRANSMISSION - TORQSHIFT .