For St. Louis drivers who need a heavy-duty truck with an imposing presence, the 2025 GMC Sierra 3500 HD Chassis Cab delivers. This muscular workhorse boasts a bold exterior that exudes strength and capability. With its chiseled lines, prominent grille, and commanding stance, the Sierra 3500 HD Chassis Cab makes a powerful statement wherever it goes.
The exterior of the 2025 Sierra 3500 HD Chassis Cab features striking LED headlamps and signature daytime running lamps for improved visibility. The rugged Regular Cab and spacious Crew Cab configurations offer up to 177 inches of wheelbase length and a maximum overall length of 270.3 inches. For enhanced privacy, the Sierra 3500 HD Chassis Cab can also be equipped with deep-tinted glass.
To further customize the look and functionality of the 2025 Sierra 3500 HD Chassis Cab, GMC offers a range of exterior options. These include assist steps in chrome or black finishes for easier entry and exit, as well as perimeter lighting and auto-dimming mirrors for added convenience. A rear window defogger is also available for improved visibility in inclement weather. Discover the bold design of the 2025 GMC Sierra 3500 HD Chassis Cab by visiting our new GMC inventory at O'Fallon Buick GMC in O'Fallon, MO.