I run Nokian WR G2 on my Silverado, they're a much better in snow and wet than any other all season I've tried, though I doubt they have the carrying capacity for your truck. I've used the Vatiiva in snow, and honestly they aren't as good in the white stuff as the WR. We switched from the Vatiiva to a the Hakka's on our plow truck at work. One thing to note- the Rotiivas are listed as a Summer tire on Nokian's website, I believe this is due to the rules regarding the Winter rating. Once you get to a certain weight class, all the tire needs to meet the rating is a certain tread depth. I don't know if they'd be any better in snow than another tire.
The steel lines rot out. The ones on my 40K mile 1500 look like they're close to popping as well. The rest of the underside is almost factory fresh
Here's a forum with some pictures- Chevy brake line failures