Drove home last night, no issues. This morning I go to leave and the truck is stuck, can't even budge it in 4l, forward or back. I quickly realize the back axle is locked solid on both sides.
I immediately assume the worst, that the diff failed and some part fell in and jammed it, preventing both sides from turning.
Not the case, pulled the drums to find that somehow 3 of the 4 spring retainers had failed, everything was just chilling in the bottom of the drum. You can see in the photo how it somehow pulled the pin right through the clip. Everything else looks fine, a little dusty if anything but wear wise, no problems.
Going to try and pick up a spring kit tomorrow and put it all back together.
Quick search turned up nothing, any ideas people?