Well, this was actually on Sunday.
Mrs. Cheest and I were running errands in the Chevy. We are about finished when she wants to run to the meat market in the little town of Creston. Great meat market, BTW. I tell her it's closed on Sunday. She says it isn't, so I grin and bear it, then head west for the 30 minute drive to Creston. Creston is in the middle of Nowhere, Illannoy. It's surrounded by open prairie and the wind was wicked. As I'm making the left turn from the farm road into town, the power steering pump on the Chevy lets out a horrible growl, like the pump is ready to go south. I cross my fingers as we get into town and...the meat market is closed.
Mrs. Cheest says that rare thing that all married guys want to hear from their significant others. "You were right." She screwed up her face to say it.

So now I have to drive 30 miles back with a PS pump that is really complaining. I get home and pop the hood. There is still oil in the pump, but not a lot. I follow the hoses from the steering motor and there is oil all over the front pan by the grill. I pop the shield between the grill and the radiator and there is oil dripping from the PS cooler. In fifty + years of driving I have never had an oil cooler fail.
Apparently, it's not an uncommon problem because when I entered 'Power Steering Cooler' into Google, the first thing that came up was 'Power Steering Cooler Failure 2009 Silverado 1500'.

The local auto parts store couldn't get me one until Thursday and I'd need to pay the freight. Amazon had one to me today. That's tomorrow's job as it's getting late, the temp is dropping like a rock and I had my second booster yesterday. I felt good all day yesterday, slept in a bit this morning, had a bad case of 'Assus Draggus' hit me about 15:00 this afternoon. I want a nap.