2002 Chevy Impala car shaking down the highway

I have a 2002 impala it shakes going down the road, had all 4 tires balanced and rotated, the shake is not horrible but more annoying, tires area bout 90% or more tread left. I can feel it in the steering wheel, through the seat and in my feet. In town its not as bad but is still there. I should note that we have now also tried a total of three different tires and wheels from other vars, and yes we balanced them first. No results. When the car is shifted into neutral and letting it coast it's still there, so I think it must be a rolling issue. I was told one wheel bearing was just replaced on it, but the person does not know which one it was, is it possible to mess that up and cause the car to shake/wobble?