The only way to describe this job:
First we have to blow apart the front of the truck. The hidden push pins are the best! My forearms are raw.
Then we remove the offending part... slicing our hands up in the process. The wet spot might suggest where the problem is localized.
Why would they make that out of mild steel?
And finally we make a quick bracket and hang the Hayden 676 transmission cooler we'd purchased for the Monte's power steering a year ago (guess we upgrading!). Run the lines, make a couple of adapters out of some leftovers, and take a stroll down Struggle Street connecting the oily lines together.
Some protective sheathing, a few zip ties, and reassembly tomorrow. Good enough.