The First-Ever Sierra AT4 | GMC
- Published on: Tuesday, January 22, 2019
- The Sierra AT4 combines off-road capability with the refinement and innovation of a GMC - making it a premium-grade full-size pickup that's perfectly at home on the open road or off the beaten path.
Learn more at https://www.gmc.com/trucks/2019-sierra-1500-pickup-truck
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