98-02Fbody trans cooler lines
thanks,
Jim
From the factory, 2 lines come out of the passenger side of the transmission and run to the front of the car. These are your transmission fluid/oil/coolant lines. On a 4L60E, they are placed one on top of the other or "two tall." The bottom line is the "feed line" which runs out of the transmission into the factory in-tank cooler inside the radiator. The feed line connects to the radiator at the bottom of the passenger's side of the radiator. The top line is the "return line" which runs transmission fluid back to the transmission from the factory in-tank radiator cooler. The return line begins at the top of the radiator on the passenger side, and runs back to the transmission.
Here is a simple diagram of the factory setup:
Transmission->Feed line->Radiator(stock cooler)->Return Line->Transmission
good luck,Johnny









