Professional Grade engineering defines every GMC vehicle, and Sierra is powerful proof. Sierra empowers you to step up Like a Pro with available features such as the world’s first six-function MultiPro™ tailgate, first-in-class Head-Up Display, Rear Camera Mirror and more.
https://www.gmc.com/trucks/sierra/1500#capability
Subscribe to GMC: http://www.youtube.com/gmc
Facebook: http://www.facebook.com/gmc
Twitter: http://www.twitter.com/gmc
Instagram: http://www.instagram.com/gmc
source