Used GMC Sierra 1500 for Sale near Thornhill, ON

Summary

• With 228 currently listed for sale near Thornhill, ON and an average price of $62,948.00 CAD, 40.8% of 2025 GMC Sierras for sale on CarGurus are rated as good or great deals.

• Favourably reviewed: Owners rated the 2025 GMC Sierra 1500 5 / 5 stars.

• 100.0% of 2025 Sierra 1500 models on CarGurus are accident free.

Why it stands out

The 2025 GMC Sierra 1500 stands out as a full-size pickup that leans into a more upscale personality than many rivals. It combines distinctive styling with strong trailering capability and good connectivity features, while its trim range gives buyers a wide spread of personalities, from rugged to near-luxury. GMC’s approach is especially clear in the cabin, which is described as high in quality without relying on lots of frills or embellishments.

For 2025, the Sierra 1500 sits in the fifth generation, which was introduced for the 2019 model year. The 2022 refresh brought updated styling and better infotainment functionality, along with availability of the General Motors Super Cruise semi-automated hands-free driving system. It also offers the MultiPro tailgate, whose smaller hinged gate can pop up from the main gate to create different configurations and improve practicality. The trim lineup includes Pro, SLE, Elevation, SLT, Denali, Denali Ultimate, AT4, and AT4X, with the Denali and Denali Ultimate focused on luxury, the Elevation and AT4 on rugged styling, and the AT4X adding heavy-duty off-road hardware, skid plates, beefed-up dampers, all terrain tyres, and 16-way power heated and ventilated front seats with a massage feature.

Buyers are also drawn to the Sierra 1500 because it offers a broad range of powertrains and drivetrains. The available engines include a 2.7-litre turbocharged four-cylinder rated at 310 horsepower and 430 lb-ft of torque, a 4.3-litre V6 rated at 285 horsepower and 305 lb-ft, a 5.3-litre V8 rated at 355 horsepower and 383 lb-ft, a 6.2-litre V8 rated at 420 horsepower and 460 lb-ft, and a 3.0-litre inline-six Duramax turbodiesel rated at 305 horsepower and 495 lb-ft. Rear- and four-wheel drive are available, and transmission choices include six-, eight-, and 10-speed automatics. The main caution is cost: late used examples are the most expensive Sierras on the market, and the lineup itself can be overwhelming, but the truck’s mix of capability, technology, and upscale presentation is what makes it distinctive.

Other model years to consider

• 2022 GMC Sierra 1500

  • Average price: $43,483.00 CAD
  • Good/great deal percentage: 30.1%
  • User rating: 5 / 5
  • Total listings: 176

• 2024 GMC Sierra 1500

  • Average price: $52,868.00 CAD
  • Good/great deal percentage: 44.7%
  • User rating: 4.64 / 5
  • Total listings: 244

• 2023 GMC Sierra 1500

  • Average price: $46,204.00 CAD
  • Good/great deal percentage: 42.2%
  • User rating: 4.33 / 5
  • Total listings: 211

These recommendations are based on CarGurus' proprietary market data from September 2, 2026, CarGurus experts' opinions, and generative AI.