i got good news today. i went to inland truck to see about a custom driveshaft because i read about the aluminum ones that are 80 some inches long failing. but mine is only 60 inches long and made out of 3 and a half inch steel on my 2012 rcsb ls work truck with hd trailering equipment package. i dont know if they all have steel driveshafts now?

 

It's a length thing, you can go up to 68in on a steel shaft safely, any length over than needs to be either two piece or the cheaper route of aluminum( thanks GM for picking the cheap route)

 

^^^^ Xs 2 on that

 

On the upside, I'm seeing 2 piece shafts in the catalog for some of the new CK7 trucks.

 

my steel shaft tore itself in half so dont be so happy about it. i dont know what gauge the steel is but the walls of the shaft arent very thick at all