GMC Debuts Industry “First” Features And Adds A New 4x4 Model To Its 2020 Heavy-Duty Pickup Offerings

[Pthorpe84]

Bigger. Bolder. Quieter. Quicker. Smoother. Stronger. Smarter. Those are just a few of the words that came to mind when we wrapped up a couple of days behind the wheel of the ’20 GMC Sierra HDs, both gas and diesel. The four-wheel-drive Crew Cab 2500 and 3500 dualies we drove made it clear that GM’s

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