knocking noise while drive

[jsbihn]

So basically all you did was rotate and balance out the tires and the bump was gone???

If so way to go.
I know that when I diagnose patients, I always make sure to think "horses" first, not "zebras"... but given I would have never guess based on the info you gave it was that easy of a fix.
Good job....

PS even better for saving 900 bucks from the stealership