2017 GMC Sierra Denali 2500 Heavy Duty Hides Something Under Its Hood Scoop
1 Jun 2016, 13:55 UTC · By: Mircea Panait / GMC is keeping its lips shut about what's beyond the hood scoop of the 2017 model year Sierra Denali 2500 HD. Two bucks says is an updated 6.6 Duramax engine