This generation of the GMC Sierra debuted in 2018 with unique features like the MultiPro tailgate, class-exclusive towing cameras, and a bevy of active safety equipment. For 2021, those same elements carry over plus a few new ones – the most notable being the CarbonPro package.
The $1,070 CarbonPro package, as its name implies, adds a carbon-composite inner bed to the Denali and AT4 models.
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