Has anyone ever noticed this on their truck? I changed the oil yesterday and noticed fluid all over the starter. I followed it up to a water / trans fluid cooler on the drivers side of the block.

 

Did you check your transmission fluid? Radiator fluid? My cooler went bad and contaminated the transmission fluid. 1K later I was rebuilding the trans. The cooler itself and set me back $600.00 for the part only. Have the dealer replace the cooler. They only charge one hour and it's an all day job. It's a real ***** to get to.

BTW the dealer will know this as the torque converter cooler.