vibration in drive train

First, your problem isn’t in the transmission at all, it’s likely in the half-shafts. Let me ask you a question: when they pulled the CVs, did they replace all of the bearings? Sometimes, it is easy for a technician to miss the inner bearings because they are rather hard to get to. Indeed, some techs make the assumption that since the outside devices carry most of the load and since they tend to load up the most heavily in any turns that they are the ones that should be replaced.

The result is that you can get uneven wear and a vibration or wobble can set up and happen.

Even more troubling, though, is the fact that the half-shafts may not have been replaced correctly so that there’s a mismatch occurring that could be causing some rather significant damage to your car’s front end.

Here’s my recommendation: get your car back to the shop where the work was completed (or rather incompleted, in this case) and have them take the front CVs apart again, making sure they replace all of the components, not just some of them. Have them go over the service manual to make sure they follow each step of the factory-outlined procedures. Because of the complexities involved, many times techs will either skip a step or two, assuming that parts on the inside are still good or not completely replace all components outlined in the service manual.

Be sure that they do and that they recheck the work. And, oh yes, make sure that the comp this work because it should be warrantied because they have already completed job one time and you have already paid for something they obviously haven’t completed correctly.

I hope this helps. Let me know what happens and what the shop says. I’d be interested to hear.