NHTSA Complaint #11425361 — 2017 FORD F-350

I was merging onto an express lane ramp on Tuesday, July 13, 2021 at approximately 10:10PM the rear end of my truck started vibrating; I thought I had a knot on a tire, so my plan was to take the next exit to check all tires. As I merge onto the express lane, literally approximately 1 mile from the beginning of the ramp and the uncontrollable vibrating, I hear a lot of noise (I.e. clanking and beating). My truck RPM increased, but my speed did not. I coasted over to the shoulder to check my truck out. All tires were still inflated. I looked underneath and found my rear drive shaft laying on the ground. It had came loose from the front drive shaft. I had it towed to diesel mechanic shop the next day. They diagnosed as my rear axle suspension is cracked. I have the 4.10 rear axle on my truck.