Noticed I got the dreaded cracked dash at the top left corner of my airbag. I have a 2012 Sierra Denali I bought back in April . It was a certified GMC purchased vehicle. I went to the dealership yesterday and low and behold ..... Its not covered . Now I am Pissed the hell off. I have a 30,000 dollar truck and have a cracked dash. What the heck does certified cover? I will be calling GMC as soon as I calm down.