Summary

• With 79 currently listed for sale near Washington, DC and an average price of $27,995.00, 16.5% of 2015 GMC Sierras 2500HD for sale on CarGurus are rated as good or great deals.

• Favorably reviewed: Owners rated the 2015 GMC Sierra 2500HD 5 / 5 stars.

• 58.2% of 2015 Sierra 2500HD models on CarGurus are accident free.

Why it stands out

The 2015 GMC Sierra 2500HD stands out as a heavy-duty pickup that brought more advanced safety and convenience features into the segment. It was among the first heavy-duty pickups available with forward-collision warning, lane-departure warning, and adaptive cruise control, and it also offered a 110-volt AC household-style power outlet and an eight-inch infotainment touchscreen. An All-Terrain package was available as well, giving it an extra layer of appeal for buyers who wanted a more rugged setup than the Chevy counterparts offered.

Powertrain choices were straightforward and work-focused, with a 6.0-liter Vortec V8 gas engine and a 6.6-liter Duramax diesel V8, both paired with six-speed automatic transmissions. Rear-wheel drive came standard and four-wheel drive was available. The trim lineup ranged from Base and SLE to SLT, off-road AT4, and upscale Denali, so the truck could be configured as a basic hauler or a more premium heavy-duty pickup. Cab and bed choices were also broad, with Regular Cab, Crew Cab, and Double Cab configurations and 6'5" or 8' beds.

For shoppers, the 2015 Sierra 2500HD is appealing because it blends heavy-duty capability with a more upscale feel than many rivals. Owners often praise its strong performance, luxurious features, and comfortable ride, especially when equipped with the Duramax diesel. The main tradeoff is that it can be expensive compared with other options, and used examples should be checked carefully for the electrical and infotainment issues noted for this generation.

Other model years to consider

• 2025 GMC Sierra 2500HD

  • Average price: $75,418.00
  • Good/great deal percentage: 17.4%
  • User rating: 5 / 5
  • Total listings: 470

• 2020 GMC Sierra 2500HD

  • Average price: $48,955.00
  • Good/great deal percentage: 18.6%
  • User rating: 4.86 / 5
  • Total listings: 140

• 2024 GMC Sierra 2500HD

  • Average price: $68,846.00
  • Good/great deal percentage: 20.2%
  • User rating: 4 / 5
  • Total listings: 456

This analysis is based on CarGurus' proprietary market data from August 6, 2026, CarGurus experts' opinions, and generative AI.