2001 2500hd

This has happened enough that I’m starting to get a little concerned.

Every now and then if/when I hit a bump my front driver side hub tries to engage. I’m not certain that’s what it is but it sure sounds like it. It’s wheel specific and it’s just a grinding noise that won’t stop until I come to a complete stop. I always put it in reverse for good measure. Not sure if that does anything or not. To the best of my recollection it’s only happened my I’m turning left.

I had a 2006 F150 that did the same thing...only it did it going 80 mph down the interstate. I think the ford place replaced a vacuum breaker or something.

Any suggestions?