Summary

• With 1,945 currently listed for sale and an average price of $81,780.00, 32.7% of 2026 GMC Sierra 2500HDs for sale on CarGurus are rated as good or great deals.

• Favorably reviewed: Owners rated the 2026 GMC Sierra 2500HD 5 / 5 stars.

• 96.6% of 2026 Sierra 2500HD models on CarGurus are accident free.

Why it stands out

The 2026 GMC Sierra 2500HD stands out as a heavy-duty pickup that leans into upscale presentation as much as capability. In GMC’s lineup, it is offered in more trim levels than the related Chevy Silverado 2500HD, with a wider range of upscale options and features, and the Denali and Denali Ultimate trims are described as more luxurious than the Silverado version’s top-tier High Country trim. It also offers a broad spread of configurations, including Regular Cab, Crew Cab, and Double Cab body styles, along with 7-foot or 8-foot-2-inch cargo bed options.

For 2026, the MultiPro Tailgate became available on more trims, adding to a feature list that already includes Bluetooth, Android Auto, Apple CarPlay, and wifi hotspot accessibility through the GMC infotainment system. Available convenience and comfort features include 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. 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 focus on luxury cabin features.

Under the hood, the 2026 GMC Sierra 2500HD comes with a 6.6-liter V8 gas engine paired with a six-speed automatic transmission, and it is also available with a 6.6-liter Duramax turbodiesel V8 engine and a 10-speed automatic transmission from Allison. Rear- and four-wheel drive are available. Buyers should also be aware that this generation has had a number of reported issues, including check engine lights tied to diesel particulate filters or emissions sensors, sluggish infotainment responses, rough or delayed shifts, electrical glitches, MultiPro tailgate flaws, and faulty trailer brake controllers. That mix of strong equipment, premium trim choices, and known problem areas makes the Sierra 2500HD appealing to shoppers who want a more upscale heavy-duty truck, but it also rewards careful inspection before purchase.

Other model years to consider

• 2025 GMC Sierra 2500HD

  • Average price: $74,368.00
  • Good/great deal percentage: 33.7%
  • User rating: 5 / 5
  • Total listings: 4,162

• 2024 GMC Sierra 2500HD

  • Average price: $67,942.00
  • Good/great deal percentage: 33.3%
  • User rating: 4.2 / 5
  • Total listings: 4,162

• 2020 GMC Sierra 2500HD

  • Average price: $49,670.00
  • Good/great deal percentage: 29.7%
  • User rating: 4.86 / 5
  • Total listings: 1,127

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