Huazcar lozano

Same issue. I own a 2016 Sierra Denali 6.2 and just bought it used from motor werks Cadillac in Barrington il. And they told me the same thing. $600 dollar repair. And said that the bumper to bumper warranty was expired, which it is. But come on with only 30k and I have a leak and the GPS is not working. I hope they fixed the problem and design better more thoughtful parts. it is an expensive truck. And to have this problems like this I think is unacceptable. thanks and GM DO SOMETHING ABOUT IT!