Used 2025 GMC Sierra 2500HD for Sale near New Brunswick

Summary

• With 120 currently listed for sale and an average price of $93,569.00 CAD, 29.2% of 2025 GMC Sierras 2500HD for sale on CarGurus are rated as good or great deals.

• Favourably reviewed: Owners rated the 2025 GMC Sierra 2500HD 5 / 5 stars.

• 100.0% of 2025 Sierra 2500HD models on CarGurus are accident free.

Why it stands out

The 2025 GMC Sierra 2500HD stands out for offering a heavy-duty pickup with a more upscale feel than many rivals. In this generation, GMC gives it more trim levels and a broader range of upscale options and features than the related Chevrolet Silverado 2500HD, with Denali and Denali Ultimate versions positioned as especially luxurious. It also brings a wide spread of available technology and comfort equipment, including Bluetooth, Android Auto, Apple CarPlay, Wi-Fi hotspot capability, remote keyless entry, rear-seat reminders, a Bose premium audio system, power-adjustable front seats, chrome grille trim, dual-zone automatic climate control, and power-folding tailgate options.

It is also distinctive for its powertrain choices and work-ready flexibility. The 2025 Sierra 2500HD comes with a 6.6-litre V8 gas engine paired with a six-speed automatic transmission, and it is available with a 6.6-litre Duramax turbodiesel V8 engine and a 10-speed automatic transmission from Allison. Rear- and four-wheel drive are available, and buyers can choose from Pro, SLE, SLT, AT4, AT4X, Denali, and Denali Ultimate trims, along with Regular Cab, Crew Cab, and Double Cab body styles and 7' or 8'2" cargo bed options. The AT4 models add off-road hardware and accessories such as skid plates, off-road suspension upgrades, and a more robust transfer case, while the Denali trims add luxury cabin features.

At the same time, used buyers should be aware that this generation has a long list of reported problems. Issues include illuminated check engine lights caused by diesel particulate filters or emissions sensors, sluggish infotainment responses, rough or delayed shifts, electrical system glitches, flaws in the MultiPro tailgate that can result in it becoming unlatched while driving, and faulty trailer brake controllers. That means the 2025 GMC Sierra 2500HD can be appealing if you want a well-equipped heavy-duty truck with broad trim and configuration choices, but it deserves careful inspection before purchase.

Other model years to consider

• 2024 GMC Sierra 2500HD

  • Average price: $79,559.00 CAD
  • Good/great deal percentage: 28.6%
  • User rating: 4.2 / 5
  • Total listings: 147

• 2021 GMC Sierra 2500HD

  • Average price: $58,236.00 CAD
  • Good/great deal percentage: 33.8%
  • User rating: 5 / 5
  • Total listings: 71

• 2023 GMC Sierra 2500HD

  • Average price: $67,036.00 CAD
  • Good/great deal percentage: 29.6%
  • User rating: 4 / 5
  • Total listings: 152

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