dmodem

I purchased a new '17 crew cab/short box in November and noticed the highway shake at 70+. I thought it may be the stock 18" tires/wheels, so I recently replaced with a set of 20s. Guess what? No change. It goes in the shop tomorrow, and I'm taking a service tech on a test ride so he can see what I'm talking about. It shakes (bounces) so bad at 70+ that my wife laughs at the build quality, and the shimmy makes me nearly nauseous. I just passed 2,100 miles and hope this will get resolved. I like the truck but can't get over the shake and number of owners with the same.