Ah, the old diesel vs. gas debate. Each type of engine has its fans and supporters, with arguments supporting both. And there are all kinds of things to consider when trying to choose between the two, ...
GMC’s off-road-focused AT4X lineup comes in three sizes: the heavy-duty Sierra HD is the largest, the mid-size Canyon is the smallest, and smack in the middle is the full-size, light-duty Sierra 1500.