Set to be launched in the second half of 2019, the Sierra Denali HD looks a tad classier than its corporate cousin. This is due to the truck’s more traditional grille and familiar headlights. While the image isn’t too revealing, we can see some subtle “HD” badging by the turn signals and a new lighting element that is incorporated into the grille.
GMC is keeping details under wraps, but the truck will follow in the footsteps of the Silverado HD. As a result, we can expect the Sierra will be offered with two all-new powertrains. GM hasn’t said much about them, but one will be a petrol engine with direct injection that is paired with a six-speed transmission. The other will be a Duramax turbodiesel which cranks out 910 lb-ft (1,233 Nm) of torque. The latter engine will be connected to a new 10-speed Allison automatic transmission.
While the company is staying coy on specifics, we can expect an upgraded interior with a “taller, more comfortable seating position.” The Sierra HD crew cab should also benefit from an additional 3 inches (76.2 mm) of rear legroom.
Speaking of the cabin, the Sierra HD should have a new IntelliLink infotainment system and a color head-up display. We can also expect an available rear camera mirror that provides more rearward visibility than a conventional mirror.
It remains to be seen if some of the Sierra’s more distinctive features will carryover to the heavy duty variant. One of the most notable is the CarbonPro bed which is stronger than a traditional steel bed despite weighing 62 pounds (28 kg) less. The Sierra 1500 is also offered with a MultiPro Tailgate that has six unique positions including a workstation mode, a step mode and a seat mode.
The 2020 Silverado HD will celebrate its official debut next month and it’s possible the Sierra HD will be along for the ride.