Union Park Buick GMC

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New GMC Vehicles for Sale in Wilmington, DE


If you're searching for dependable capability, advanced technology, and refined comfort, explore the lineup of new GMC vehicles available at Union Park Buick GMC. From capable GMC trucks built for demanding jobs to versatile SUVs designed for everyday adventures, there's a model to fit a wide range of driving needs. Whether you're commuting through Wilmington, DE or planning your next road trip, GMC vehicles deliver the performance, confidence, and premium features drivers appreciate. If you're planning to upgrade your current vehicle, you can start by using our Value Your Trade tool to estimate your current vehicle's value.

Our knowledgeable team is here to help you compare GMC models, explore available trims, and discover the latest features that matter most to you. Whether you're interested in advanced safety technology, towing capability, spacious interiors, or premium amenities, we'll help you find a GMC that complements your lifestyle. When you're ready to take the next step, don't hesitate to Contact Us to schedule a test drive, ask questions about our inventory, or learn more about your available purchasing and financing options.

Which GMC truck is right for towing and hauling? GMC builds a truck for every level of towing and hauling need, from weekend recreation to serious commercial work. Here's how the lineup breaks down:

  • GMC Sierra 1500 — Our most versatile half-ton truck, ideal for boats, smaller travel trailers, and everyday hauling. Properly equipped with the Duramax 3.0L turbo-diesel engine, the Sierra 1500 reaches a maximum towing capacity of 13,300 lbs. The Max Trailering Package — which adds a trailer brake controller, revised shock tuning, an enhanced cooling radiator, and heavy-duty rear springs — is a must-have for serious towing.
  • GMC Sierra 2500HD — Built for heavier loads like construction equipment, large livestock trailers, and bigger campers. The 6.6L Duramax Diesel offers a max tow rating up to 18,500 lbs conventional, and up to 36,000 lbs with a 5th-wheel or gooseneck setup when properly equipped. Max payload reaches up to 3,979 lbs depending on cab, bed,and axle configuration.
  • GMC Sierra 3500HD — The heavy-duty flagship for the most demanding jobs, from hauling heavy equipment to commercial-grade trailers. A properly equipped Sierra 3500HD can carry up to 7,234 lbs of payload while simultaneously towing up to 36,000 lbs. Both HD models use the 6.6L Duramax Turbo-Diesel V8, producing 975 lb-ft of torque at just 1,600 rpm for strong low-end pulling power.
  • GMC Canyon — A great option if you want solid towing in a smaller, easier-to-maneuver package. The Canyon Crew Cab offers up to 7,700 lbs of towing capacity, suited to smaller camping trailers and recreational equipment.
  • Our recommendation: For weekend boats, campers, and most family travel trailers, the Sierra 1500 with a gas or diesel engine covers the vast majority of needs. If you're regularly hauling equipment trailers, livestock, or heavier campers, step up to the Sierra 2500HD. For commercial-grade gooseneck or fifth-wheel towing at the top of the capability chart, the Sierra 3500HD is the right choice.

    • Towing capacities vary by configuration, engine, cab, and equipment — stop by our dealership and our team can help match the exact Sierra build to your towing needs.