Tag: AT4

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First Look: 2019 GMC Sierra AT4

At the New York Auto Show the full line of 2019 GMC Sierra pickups will be on hand and revealed is the all-new Sierra AT4 off-road version which marks the beginning of a new showroom wide trim grade that will be seen ...

Test Drive: 2020 GMC Sierra 2500HD AT4

Our test drive of the all-new 2020 GMC Sierra 2500 HD AT4 took us out to the Arizona desert to see how it performed in the rough as well as on the highway. Three key takeaways of this truck were that its powertrain...