For 2010, the GMC
Sierra Denali remains the Sierra's topline model. Available as a crew cab with either rear or all-wheel drive, the engine of choice is the 6.2-liter L9H V8 with 403 horsepower. As with the rest of the 2010 Sierra lineup, the interior features side curtain airbags, seat mounted side airbags, and a now-standard USB port on all radios. The interior of the Denali has long been considered luxurious and this is keeping in line with that notion.