I have a 2015 crew cab 4x4 Silverado with issues everywhere. From clunking shifts, vibrations in the steering wheel, brake pedal, throttle all the way to the rear end. Been to the dealership 3 times and they mounted a picoscope to the isolated rear seat and told me everything is within spec. I took the head technician for a test drive and had him hold the steering wheel while we were going 45 mph and with a very noticeable steering wheel vibration he was almost programmed to lie to me and tell me everything was ok. After a few minutes of shooting the s...... with him he finally told me that "yes he felt it" and to leave the truck with him so he can start his investigation. Three days later the service manager called me asking me why my truck was still sitting there and that's when everything got screwy. I did manage to remove my factory driveshaft and take it to a local driveline shop where they found that my driveshaft was bent and over 2.5 oz out of balance in the rear straight from the factory. I fixed that problem without GM even acknowledging it when I showed them the paperwork and now the vibrations seem to be intermittent from the front end at all speeds. Knowing that Government Motors has major issues with QC and Specs, considering that they outsourced everything to Mexico, I believe that the source of the manufacturing issues is either the front differential, steering assembly, wheel bearings, front CV's, transmissions, cab mounts, rear end tolerances and or the frames. Another great issue I am having that recently showed up is I have paint bubbling up and beginning to crack and peel off on the drivers side passenger door and drivers side pillar next to the windshield. Without the dealerships acknowledging the issues, probably directed by corporate, and the paint beginning to fall off I don't even know what the options are. I cant due a lemon law or buy back if they don't even investigate issues and who is going to want to buy a two year old $50k truck that vibrates and paint falls off of??