Ok, So here's the deal... I purchase a 2014 Silverado LT back in September. I drove the car home and it was as smooth as a Cadillac. However, a few days later, with only 60 miles, I got on the highway and noticed a shaking/vibration/hoping in my car. I couldn't believe it. A 40K $$$ truck with issues out of the factory. I took it back to the dealer with 135 miles or so. They said GM does not authorize anyone to work on the truck until at least 500 miles. However, the GM rep for my area said they are aware of the situation, so they would authorize the dealer to work on the vehicle. Ill make this story short. Took it in 3 times. First time one tire changed. Second time two tires changed. Third time the last tire changed. I went to pick up the vehicle and it still had the issue. Took the vehicle back and they checked it out and said there was no shaking observed. Obviously they didn't feel the shaking because they didn't go over 40 MPH.. I have made it very clear its from 60-80 MPH. Especially when turning on the road. I took the service manager for a test drive and he said he definitely felt the vibration and hoping in the vehicle. It got to the point I drove up to 90 MPH and the tools under my back seat started making noise and sounded like they were going to pop out of the brackets. The service manager said he will contact the GM rep as there is nothing else they could do. Finally they sent an engineer from GM to check the car out. He did not say there wasn't a shaking issue, he just said the vehicle drives to manufacture specs. So Chevy thinks its normal for a 40K $$$ truck to shake and have a hop to it. Then the engineer said he did not go past 70 MPH because of state regulations. They shouldn't build it to pass 70 MPH if the shake gets worse. Then the GM rep himself came. Took it for a test drive with the rep and the service manager. They both felt the shaking/vibration. The GM rep basically said, this is how the car is built and its not a real bad vibration. He said there's nothing else they can do and they would get me in to another one but wouldn't get me out of it. I told him I wanted out. He said he could not help me. I filled the lemon law in the state of Florida. We sent GM all the paperwork and documentation. They denied the claim and refused to buy the truck back. I guess they don't care about their customers. Oh I forgot to add, this is my 8th GM truck and I purchased 11 from the same dealer. Anyways now I have to go to arbitration because Chevy would rather piss off and loose loyal customers instead of buying their faulty product back and keeping their reputation. I will surely encourage no one to buy a GM product. Their morals, values and ethics are horrific. Might I add I made a claim with GM customer service and the lady has not called be back since November. I always get her voice mail. Maybe Chevy thinks the government will continue to bail them out and don't care what kind of garbage product they put on the street. As well as several Silverado with different safety recalls being issued. I am completely upset with GM. I told the Rep buy the truck back and ill buy a 2015 when they fix the issues. I believe Chevy knows what the issue is, however its to much money to fix. I suggest everyone files the lemon law in their perspective states to show Chevy their product sucks and their customers mean business. If anyone knows Someone who has filled the lemon law on their Silverado and won, please let me know as we can all use that for our lemon law as evidence. Thanks guys, sorry for the venting, however everyone should be aware of the bad customer service and poor quality products being put on the road by GM. God Bless everyone.