So, What's the Difference Between AT4 and AT4X Anyway?
If you're browsing the GMC lineup, you're likely asking what's the difference between AT4 and AT4X before you sign any paperwork. It's a valid question because, at first glance, both trucks look like they're ready to eat a mountain for breakfast. They both have that aggressive stance, the blacked-out accents, and that "don't mess with me" vibe that GMC has perfected over the last few years. But once you dig into the specs and actually get behind the wheel, you realize these two trims are built for very different types of drivers. ...