Sterling Heights, Michigan -- It's not difficult to understand why General Motors makes heavy-duty trucks. The HD pickup truck is absolutely required for hard work. It's a necessity for building homes, cutting down forests, harvesting crops, pulling out stumps, and plowing snow. In fact, 77 percent of HD buyers use their truck for towing or trailering at least once a week, compared with 32 percent of light-duty owners. The heavy-duty pickup isn't a relic of the past but instead a reminder of what a truck is really about. It goes to work, sweats it out, and gets the job done.