One more question!

I have had this problem for awhile and cannot seem to figure out what it is! When I am driving around 20-40 mph sometimes my car tends to shake up and down, but when I hit a higher gear it goes away. I don't have this problem at lower or highway speeds. I just had the axels replaced and thought it would do the trick. Wheels balanced and alignment done. Could this be a wheel issue? Suspension?

Thanks.

 

You may have a tire that is not round, or a wheel that is bent. I assume the tire place checked them for unusual wear and also set the pressure correctly. Ideally, borrow the wheels and tires from a friend's car and see if the problem persists. You can also try rotating your tires front to back and see if the symptom changes.