Feast your eyes on the latest spy shots of the upcoming 2020 GMC Sierra HD. The upcoming HD beast has been spied undergoing testing before, but not in this particular configuration – as the prototype seen here appears to be a Regular Cab in Denali trimmings.
Those familiar with GMC’s lineup will have already tilted their head in slight skepticism after reading that, since the current Sierra HD is only available as a Crew Cab in either single or dual rear wheel configurations. But apparently, GM wants to print even more money from its “Money Machine” GMC brand by extending the Denali trim level to the Regular Cab configuration of the future Sierra HD.
From what we can see on this heavily-camouflaged prototype, the 2020 GMC Sierra Denali 2500HD will follow the same formula as the recently-revealed 2019 Sierra Denali 1500, with a huge chrome grille, unique wheels, and unique interior features and equipment. The tell-tale sign that we’re looking at a Denali model is the embroidered “Denali” inscription on the head rests.
Like the new Sierra 1500, the 2020 GMC Sierra will utilize a mixed-material construction consisting of aluminum and steel. The CarbonPro box and MultiPro tailgate are also likely to show up on the Heavy Duty 2500 and 3500 models.
The 6.6L Duramax L5P diesel engine mated to the Allison 1000 Transmission is expected to carry over, but something tells us that the base 6.0L L96 Vortec V-8 gasoline engine (and its 6.0L LC8 gaseous variant) will be replaced by all-new units.
Expect the new 2020 GMC Sierra HD to debut sometime in early 2019, and launch in later on in the year.