GMC Sierra 2500 Denali
The 2018 GMC Sierra HD gets the new for 2018 6.6-liter Duramax turbo diesel V8 with a massive claimed output of 445 horsepower and 1233 Nm of torque.
It feels good to drive, too. But this truck’s real value proposition isn’t under the hood, it’s in the details.
The Sierra Denali HD is GMC most capable, luxurious and expensive player into this fiercely competitive segment