Prices starting at: $47,000

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Learn More About Buying a 2026 GMC Sierra 2500 HD in KEENE

Visit Fairfield's Buick GMC for a great deal on a new 2026 GMC Sierra 2500 HD. Our sales team is ready to show you all of the features that you will find in the GMC Sierra 2500 HD and take you for a test drive in the KEENE Area. At our GMC dealership you will find competitive prices, a stocked inventory of 2026 GMC Sierra 2500 HD cars and a helpful sales team. Stop by our car dealership today and take a 2026 GMC for a spin.

2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD AT4

  • MSRP$86,095
  • Offers$1,000
  • Fairfield Price$85,095
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Jet Black with Kalahari accents, Perforated Front
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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD AT4

  • MSRP$90,485
  • Offers$1,000
  • Fairfield Price$89,485
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Jet Black with Kalahari accents, Perforated Front
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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD AT4X

  • MSRP$99,175
  • Offers$1,000
  • Fairfield Price$98,175
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Obsidian Rush, Full Grain Leather seat trim
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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD AT4X

  • MSRP$98,680
  • Offers$1,000
  • Fairfield Price$97,680
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Obsidian Rush, Full Grain Leather seat trim
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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD AT4X

  • MSRP$98,745
  • Offers$1,000
  • Fairfield Price$97,745
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Titanium Rush Metallic, Interior Color: Obsidian Rush, Full Grain Leather seat trim
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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD AT4X

  • MSRP$98,910
  • Offers$1,000
  • Fairfield Price$97,910
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Obsidian Rush, Full Grain Leather seat trim
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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD AT4X

  • MSRP$98,780
  • Offers$1,000
  • Fairfield Price$97,780
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Volcanic Red Tintcoat, Interior Color: Obsidian Rush, Full Grain Leather seat trim
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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD AT4X

  • MSRP$99,405
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Obsidian Rush, Full Grain Leather seat trim
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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD Pro

  • MSRP$53,935
  • Offers$1,000
  • Fairfield Price$52,935
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Special Exterior Color, Interior Color: Jet Black, Cloth seat trim
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2026 GMC Sierra 2500 HD Truck

2026 GMC Sierra 2500 HD Pro

  • MSRP$57,440
  • Offers$1,000
  • Fairfield Price$56,440
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Onyx Black, Interior Color: Jet Black, Cloth seat trim
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2022 GMC Sierra 2500 HD Truck

2022 GMC Sierra 2500 HD Denali

  • Price$54,895
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 75,842 miles, Exterior Color: Ebony Twilight Metallic, Interior Color: Jet Black, Forge perforated leather seat trim
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2022 GMC Sierra 2500 HD Truck

2022 GMC Sierra 2500 HD AT4

  • Price$58,875
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 64,350 miles, Exterior Color: Onyx Black, Interior Color: Jet Black with Kalahari Accents, Perforated front
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2024 GMC Sierra 2500 HD Truck

2024 GMC Sierra 2500 HD Denali

  • Price$70,895
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 51,533 miles, Exterior Color: Summit White, Interior Color: Atmosphere/Brownstone, Forge Perforated Leather se
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2024 GMC Sierra 2500 HD Truck

2024 GMC Sierra 2500 HD Denali Ultimate

  • Price$77,875
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 22,979 miles, Exterior Color: White Frost Tricoat, Interior Color: Alpine Umber, Full Grain Leather seat trim
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2019 GMC Sierra 2500 HD Truck

2019 GMC Sierra 2500 HD SLE

  • PricePlease Call
Engine: 6.0L Engine: , V-8, SFI, FlexFuel w/ E63 only, Transmission: Automatic, Mileage: 68,718 miles, Exterior Color: Dark Slate Metallic, Interior Color: JET BLACK, CLOTH SEAT TRIM
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2015 GMC Sierra 2500 HD Truck

2015 GMC Sierra 2500 HD

  • PricePlease Call
Engine: 6.0L Engine: , V-8, SFI, FlexFuel w/ E63 only, Transmission: Automatic, Mileage: 70,681 miles, Exterior Color: Onyx Black, Interior Color: DARK ASH WITH JET BLACK INTERIOR ACCENTS, CLOTH SE
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2016 GMC Sierra 2500 HD Truck

2016 GMC Sierra 2500 HD

  • Price$28,995
Engine: 6.0L Engine: , V-8, SFI, FlexFuel w/ E63 only, Transmission: Automatic, Mileage: 23,676 miles, Exterior Color: Summit White, Interior Color: JET BLACK/DARK ASH, CLOTH SEAT TRIM
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View All Pre-Owned GMC Sierra 2500 HD

GMC (1)

Sierra 2500 HD Truck (3)

2026

Manufacturer Offer

For Well-Qualified Buyers When Financed w/ GM Financial

  1. 4.9% APR for 36 months
  2. 4.9% APR for 48 months
  3. 5.9% APR for 60 months
  4. 6.9% APR for 72 months
  • Applies to this new 2026 GMC Sierra 2500 HD

For Well-Qualified Buyers When Financed w/ GM Financial

Disclaimer(s)
  • 4.9% APR for 48 months for well-qualified buyers when financed w/GM Financial. Monthly payment is $22.98 for every $1000 you finance. Average example down payment is 10.0%. Not available with leases and some other offers. Must take new retail delivery by 03/31/2026. Truth in Lending Act Disclosure: Down payment will vary with APR and credit. For example, 4.9% APR with $2,500 down payment provides for 48 monthly payments of $22.98 per $1000 financed for qualified buyers. 4.9% APR for a term of 36 months corresponds to a monthly cost of $29.93 per $1000 financed. 6.9% APR for a term of 84 months corresponds to a monthly cost of $15.04 per $1000 financed. 6.9% APR for a term of 72 months corresponds to a monthly cost of $17 per $1000 financed. 5.9% APR for a term of 60 months corresponds to a monthly cost of $19.29 per $1000 financed. The rates described are for estimation purposes only; you may not be able to finance at this rate. (See Trims)
  • See State Disclaimer *
Manufacturer Offer

Bonus Cash

  1. $500 Cash
  • Applies to this new 2026 GMC Sierra 2500 HD

Disclaimer(s)
  • Not available with some other offers. Must take new retail delivery by 03/31/2026. (See Trims)
  • See State Disclaimer *
Manufacturer Offer

Purchase Allowance

  1. $500 Cash
  • Applies to this new 2026 GMC Sierra 2500 HD

Disclaimer(s)
  • Not available with special financing, lease and some other offers. Must take new retail delivery by 03/31/2026. (See Trims)
  • See State Disclaimer *

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Disclaimer: The Manufacturer’s Suggested Retail Price excludes tax, title, license, dealer fees and optional equipment. Dealer sets final price.

1Dealer Discount applied to everyone