Used 2025 GMC Sierra 3500HD for Sale nearNewmarket, ON

Summary

• With 148 currently listed for sale and an average price of $94,592.00 CAD, 26.4% of 2025 GMC Sierra 3500HDs for sale on CarGurus are rated as good or great deals.

• Favourably reviewed: Owners rated the 2025 GMC Sierra 3500HD 5 / 5 stars.

• 100.0% of 2025 Sierra 3500HD models on CarGurus are accident free.

Why it stands out

The 2025 GMC Sierra 3500HD stands out as a heavy-duty pickup that blends serious work capability with a broader spread of trim levels and features than many buyers might expect. It is offered in regular cab, extended cab, and crew cab forms, with either a short bed or a long bed, and buyers can also choose between single- and dual-wheel rear axles. That flexibility helps make it appealing to shoppers who need a truck tailored to towing, hauling, or everyday use.

Power comes from two engine choices: a 6.6-litre V8 with 401 horsepower and 464 pound-feet of torque, or a 6.6-litre Duramax turbodiesel V8 with 445 hp and 910 lb-ft of torque. When properly equipped, the Sierra 3500HD can haul up to 3,375 kilograms and tow up to 16,100 kilograms, which puts its capability at the centre of its appeal. The truck also offers a wide range of trims, from a basic work-focused model to luxury-oriented versions, and even the more utilitarian versions include features such as a seven-inch infotainment touchscreen, Apple CarPlay, Android Auto, and a trailer hitch receiver with hitch guidance.

What makes the 2025 model especially distinctive is how much towing technology and comfort equipment it can bring to a segment that is still fundamentally about hard work. Available features include trailering assist systems, a blind-spot monitor with rear cross-traffic alert, lane departure warning, and a teen driver mode, while higher trims add items such as leather upholstery, dual-zone automatic climate control, a Bose premium audio system, a head-up display, surround-view cameras, and premium leather. The trade-off is that this is still a large, expensive truck, and the source notes that later years are 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: $81,641.00 CAD
  • Good/great deal percentage: 26.9%
  • User rating: 5 / 5
  • Total listings: 175

• 2023 GMC Sierra 3500HD

  • Average price: $74,193.00 CAD
  • Good/great deal percentage: 24.3%
  • Total listings: 152

• 2020 GMC Sierra 3500HD

  • Average price: $59,522.00 CAD
  • Good/great deal percentage: 25.0%
  • User rating: 5 / 5
  • Total listings: 56

This analysis is based on CarGurus' proprietary market data from August 31, 2026, CarGurus experts' opinions, and generative AI.