A strange photo shows a GMC Sierra AT4 bottomed out on some structure in a parking lot. We're really like to know what the ...
When you want to go off-road, uptown-style, GMC supports that vision with a rugged line of trucks and SUVs packaged under the AT4 label, or All-Terrain 4WD. These mighty vehicles are off-road ...
The 2025 GMC Acadia AT4 is a rugged and more affordable option than the GMC Yukon if you don’t need as much space. My week with this luxury SUV was more comfortable and adventurous than expected.