Loaded inside the 2021 GMC Sierra 1500 is a host of awe-inspiring performance and off-road features, as well as advanced safety and tech systems, all wrapped up inside an elegant package, both inside and out. This light-duty pickup remains the crown jewel of the GMC lineup for a reason, from its base trim to the legendary Denali, it provides all you could ever want out of a modern pickup. Gus Brown Buick GMC here in Port Perry is your top new and pre-owned destination for the wonder and tough-working ability that every Sierra presents. Learn more about this iconic pickup truck now, then explore it in our inventory for sale, starting at a terrific base price.