Transmission fell out of engine while driving .

I’ve seen it, usually driver/owner negligence of not replacing mounts and bushings when they first feel something not right instead of ignoring it until it becomes a problem

 

Another poster on here recently with the same thing. One lesson here is that after a major repair is to check the bolts much more frequently at first when the problem is going to show. After a few months if nothing has come loose then you can go longer between checks.

 

In my mind you should be crawling under the truck at least once a week to give things a good look over. Literally takes 15-20 minutes. Carry a grease gun and hit all the grease fittings while you're at it. Grab air lines/harnesses to look for chaffing, listen for air leaks, look for loose bolts, cracked crossmembers, potential leaks etc. Its amazing how many things can be caught early, before you're left on the side of the road.

 

I had the same thing happen to me. A Freightliner dealer in Ohio replaced my transmission. About 2 weeks after, I felt a vibration, so I took it to Truck Country in Davenport. They checked it, and bolts were loose in the bell housing, and another little while it would have fallen out. The dealer in Ohio stood behind their work, so the "only" thing I lost was a month and a half of revenue.

 

Yup, i picked up a little RC car years ago with a 90 degree 1080P cam and light on it. I send it under my truck every night to look over everything and once every week or two get down on my creeper and eyeball everything up close.

I cheat with the grease though XD most everything is on a grease plate. And i give them a squirt each daily

 

The repair order/permission to repair...whatever the form there is usually a disclaimer -somewhere- waranting the repair labor for XX days.

I'll bet it was around 60 or 90 days.

Was this a bolt that was over torqued, a few extra Uga Dugas with the big air gun pulls the fastener and weakens/limits it's holding power?

Possibly, but they have themselves covered with the time limit on the R.O. +/or on the invoice that OP agreed to back in January

 

Couldn't bad rear motor mounts cause this? I have a Volvo (I know, not a Freightliner) but I noticed a vibration really bad, even at idle, and the transmission would rev a lot to upshift on its own like it was strained. Had rear engine mounts (they also support trans) replaced and everything smoothed out and no more revving itself to shift.

 

I can't imagine not doing this. I'm usually home every weekend, and it's part of my routine. I'll grease it every other weekend. It's saved me from being on the road side more than once.

 

Some okay advice, I wouldn't be so hard on the driver. With todays trucks, it's entirely possible to miss something like this. Many drivers barely do a walk around, much less get on their fat axx to check something like a transmission. I bet most don't even know where to look for one. I still say hang the shop that did the work. Transmissions are NOT supposed to fall out, not in 2 months, 9 months, or 5 years.