I agree, would be a good idea for them to check the tires. I know you have to be very aggravated with it and if it were me, I'd have someone road force balance the tires before you spend too much more money on parts and see if that doesn't help but good luck!
thank you..i am at a loss. Pretty much everything in the front end is new, and tight. Going to switch out the tires. I had 4 1500's without 1 problem. This is my first 2500 I bought used 2 mos. ago. It's been back to the dealer 6 times now. They are looking at the tires this time.