Summary

• With 578 currently listed for sale and an average price of $87,672.00, 28.2% of 2026 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.

• 98.3% of 2026 Sierra 3500HD models on CarGurus are accident free.

Why it stands out

The 2026 GMC Sierra 3500HD stands out as a heavy-duty truck that blends serious work capability with a broader range of comfort and technology than its earlier generations. GMC has long marketed the Sierra 3500HD as a “commercial grade” workhorse, and this latest version keeps that identity intact while also offering more refined trims for buyers who want a truck that feels less purely utilitarian. It is available in a wide array of cab, bed, and rear-axle configurations, which helps it serve both jobsite duty and more specialized towing needs.

Its biggest appeal is capability. The 2026 Sierra 3500HD can be configured to haul as much as 7,442 pounds of cargo and tow up to 35,500 pounds, and those maximum ratings require the diesel engine, a single cab body, rear-wheel drive, a gooseneck hitch, and dual rear wheels. Power comes from a 6.6-liter V8 with 401 horsepower and 464 pound-feet of torque or a 6.6-liter Duramax turbodiesel V8 with 445 hp and 910 lb-ft of torque. The truck also offers useful towing-focused technology, including trailering assist features, an enhanced adaptive cruise control, a weight limit monitor, and a transparent trailer camera view.

The 2026 model also benefits from the equipment spread that has made the Sierra 3500HD attractive to a wide range of buyers. Even the base truck includes a seven-inch infotainment touchscreen plus Apple CarPlay and Android Auto, while higher trims add features such as a MultiPro tailgate, leather upholstery, heated front seats, a native navigation system, and a larger touchscreen. The lineup’s off-road and luxury versions broaden its appeal further, but the truck is not without drawbacks: it can be unwieldy in parking lots, top trims can be prohibitively expensive, and rivals typically can tow more.

Other model years to consider

• 2024 GMC Sierra 3500HD

  • Average price: $68,734.00
  • Good/great deal percentage: 30.6%
  • User rating: 5 / 5
  • Total listings: 1,296

• 2025 GMC Sierra 3500HD

  • Average price: $76,288.00
  • Good/great deal percentage: 29.7%
  • User rating: 5 / 5
  • Total listings: 1,228

• 2023 GMC Sierra 3500HD

  • Average price: $57,661.00
  • Good/great deal percentage: 29.9%
  • Total listings: 1,174

This analysis is based on CarGurus' proprietary market data from August 10, 2026, CarGurus experts' opinions, and generative AI.