Have had this happen to me about 6+ times.
Front shock bolt (lower bolt) breaks leaving the shock to move at will. Have tried Grade 8 bolts. Every time i have to drill out the bolt from where it snapped off.
Added a a leveling kit when I bought the truck. Had the new shocks ordered for the leveling kit. Kept breaking bolts.
Went back to stock shocks. Same result. Only it seemed to break them quicker. So I have been back to the longer shocks for some time.
Still have a broken bolt.
This happens on both sides. Seems to happen more frequently with the driver side though.
Taken it too a couple professional shops, & they are stumped.
Any idea what I could do too fix this problem. It is becoming rather annoying.