Got a damaged GMC step bumper? Don’t think twice about replacing it with a new one from CarParts.com. We have a great selection of aftermarket step bumpers for various GMC models, including the Sierra, Sonoma, and Denali. Our heavy-duty step bumpers are available in chrome, powdercoated, primed, and painted finishes. Each one is made from high-strength steel and designed to last. Check out our products below, and order a replacement step bumper today!