Hello, I have a 2011 Sierra with a cracked dash. Extensive communications with the GM executive office proved to be a waste of my time. I'm presently considering the "Coverlay.com" dash cover product. Has anyone installed one of these dash covers and what is your impression of the products quality. I'm sure the product will effectively repair the problem but, I concerned about the overall appearance. I would also like to know if anyone has used any of the numerous tuners available and their impression of the results in terms of increased power and improved fuel economy. Thank you, Ed B.