2021 GMC Sierra AT4 Review

This review, I look at the 2021 Sierra in its AT4 package. This off-road-ready package from GMC is similar to that we saw on the Canyon AT4 reviewed recently, but is more commensurate to a full-sized pickup truck. The Sierra certainly hits a lot of the marks expected of a full-sized truck and the AT4 package is a nice option for it.

Canyon AT4 review: https://www.youtube.com/watch?v=bp-6mK5-y_M


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