New Truck Inventory
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The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.
1Dealer Discount applied to everyone
1Dealer Discount applied to everyone
New GMC Trucks for Sale in Marshalltown, IA
For drivers across central Iowa who demand a truck that works as hard as they do, Karl GMC of Marshalltown offers a complete lineup of new GMC Sierra trucks. From the versatile Sierra 1500 to the heavy-duty 2500 and 3500 models, our inventory is stocked with the latest powertrains, advanced towing tech, and rugged durability that GMC is known for near Bondurant, IA.
GMC Sierra 1500: Light-Duty Capability with Heavy-Duty Attitude
The Sierra 1500 is the foundation of the GMC truck family, offering a refined ride and impressive payload capacity. It is available with a choice of powertrains that cater to different needs, from fuel-efficient daily driving to serious towing. The 5.3-liter V8 produces 355 horsepower and 383 pound-feet of torque, while the optional 6.2-liter V8 delivers 420 horsepower and 460 pound-feet for those who want maximum grunt.
The available 3.0-liter Duramax turbo-diesel inline-six is a favorite among long-haul drivers, offering 495 pound-feet of torque and excellent highway fuel economy for the stretch between Ames and Des Moines. The Sierra 1500 also features the innovative MultiPro tailgate, which offers six different functions for loading, unloading, and standing on the bed. With a maximum towing capacity of 13,300 pounds, this truck is ready for weekend projects and professional hauling alike.
Heavy-Duty Sierra 2500 and 3500: Built for the Toughest Jobs
When the task requires extra muscle, the Sierra 2500 and 3500 step up to the plate. The 6.6-liter V8 gas engine generates 401 horsepower and 464 pound-feet of torque, while the legendary 6.6-liter Duramax turbo-diesel V8 produces an astounding 470 horsepower and 975 pound-feet of torque. The diesel engine is paired with an Allison 10-speed automatic transmission, delivering smooth and confident power delivery even under maximum load. The Sierra 3500 HD can tow up to 36,000 pounds when properly equipped, making it ideal for hauling large trailers, heavy equipment, or horse trailers.
These trucks feature a reinforced high-strength steel frame, integrated trailer brake controllers, and the available trailering camera system that provides a 360-degree view around the truck for precise hitching and maneuvering. For farmers and contractors in Grinnell and Nevada, these heavy-duty models are the backbone of daily productivity.
Why Buy from Karl GMC of Marshalltown
We pride ourselves on an honest, knowledgeable sales process. Our team takes the time to understand your specific needs, whether you require a long-bed for lumber, a crew cab for the family, or a specific axle ratio for maximum towing. We stock a wide variety of configurations, so you can see and drive the exact truck you are considering. Our finance department works with local and national lenders to offer competitive rates and flexible terms, and we provide a simple online pre-approval tool that saves you time at the dealership.
After you drive home, our service center remains your trusted partner for routine maintenance, oil changes, brake service, and diesel emissions system care. We use genuine GM parts and factory-grade diagnostic equipment, ensuring your Sierra continues to perform at its peak for many miles. We are proud to serve drivers from Altoona and the entire central Iowa region with a dealership that genuinely cares about your long-term satisfaction.
Financing and Service Information
Getting behind the wheel of a new GMC truck is easier than you think. Start the process by completing our secure finance application online. Once approved, our team will walk you through the paperwork and get you into your new truck quickly.
For ongoing maintenance, our service department is open six days a week and offers extended hours to fit your schedule. We also offer a complimentary multi-point inspection with every service visit. If you are new to our dealership, check our directions page for an easy route from wherever you are. Whether you are coming from Nevada or Ames, our showroom is conveniently located just off Highway 30, making it a quick stop for all your truck needs.
Visit Our Showroom Today
Ready to see the new GMC Sierra lineup in person? Stop by Karl GMC of Marshalltown today. We have a rotating inventory of new and pre-owned trucks, and our sales team is ready to help you compare models, test drive your favorites, and drive home in a truck you will be proud to own.
Explore our complete selection by browsing our new inventory online, and then schedule your visit. We look forward to serving you and proving why GMC trucks are the smart choice for Iowa drivers who value durability, performance, and peace of mind.
How Can We Help?
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Karl GMC of Marshalltown
1000 N 3rd AVe
Marshalltown, IA 50158
- Sales: (641) 351-7829
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