Two new batteries and the big truck fired right up. The diagnosis on the Blazer? They couldn't find anything wrong, but they cleaned a bunch of sensors, filters and the fuel lines. They couldn't get it to die, or to pull up any error codes. Rather than start replacing things it might be, they said drive it and see if there's still a problem. I do like mechanics that don't find "problems" every time you get the oil changed or hear a random noise. (Although T says they just like me because I hear a lot of random noise. I told him he's right - in more ways than one - LOL!)
The tractor was still down yesterday, but at least small squares are easy to haul.
The cows will need new bales pretty soon, too, though, so hopefully G will get it up and running today.