When it comes to transmission cooling lines and plumbing the cooler before or after it is a key to which is which line. I have been hearing that GM plumbs the cooler in the rad by having the feed line come to the bottom and the return line exit out of the top to prevent foaming of the liquid. Then I hear that due to the viscosity law GM infact followed it and has the feed line out of the tranny enter the rad at the top and exit out of the bottom. But the general consencus is that the lines @ the Transmision are : the straight is return and the u-shaped is the feed.

which one is it? I thank anyone who even responds to the quandry!