burbanswervin
OBS Enthusiast
I am hooking up a new aux cooler and lines for my 96 suburban 5.7vortec, to my knowledge the supply line ( bottom port) is supposed to go to the bottom port right side of radiator; which then passes up the rad exiting the top port right side of the rad, then connecting to the top port of the aux cooler to be cooled once more,cool atf then exiting bottom port of the aux cooler sending cooler atf back to the a/t through the top (return) port. Am i correct? Reason for asking is the previous owner had this reversed which may have caused the blown transmission. The way it was routed before the supply pressure port was sending the hot atf to the top port of the rad through to the bottom port of the aux cooler