I'm pretty sure this is not normal so...What in the world would cause this ?? Leaf to frame side .

 

Nevermind folks .. I checked both sides .. They are both broken .. nice

 

Going through this myself.
Thread... leaf spring broken. I will be replacing both sides with new

 

Yeah me too unfortunately .. Should be a fun project to say the least.

 

Anyone know what the main cause is ? Bushing/Bolts seized ? Poor design? I know age and fatigue but I have seen many older cars, trucks that are much older than 2000 with the original leafs still under them.

 

Many times the break is from rust jacking. Type it in your google and it will explain somewhat. It can be from the build up of rust between the spring and the metal of the bushing. Rust has enough power to move/break the spring eye.