Is it damning with faint praise to say that this GMC Sierra 1500 AT4 diesel would make a good used truck someday? This is not a bad truck. But it is expensive; as tested, this Sierra costs just ...

Jonny Lieberman reviews the 2021 GMC Canyon AT4 Crew Cab in this Buyer’s Guide, asking, does a midsize pickup provide all the utility you need?

CNET’s expert staff reviews ... 2022 GMC Sierra AT4X. Available only with a crew cab and a 70-inch short bed, the AT4X is meant to serve those who want more capability than the Sierra AT4 ...

The 2019 GMC Sierra AT4 proves that GM's upmarket truck and SUV brand is getting serious about offering rough-and-tumble capability to rival the Ford F-150, Toyota Tundra, Ram 1500 and Nissan Titan.