Prices starting at: $48,200

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Visit Auto Mall for a great deal on a new 2026 GMC Sierra 3500 HD. Our sales team is ready to show you all of the features that you will find in the GMC Sierra 3500 HD and take you for a test drive in the Brattleboro Area. At our GMC dealership you will find competitive prices, a stocked inventory of 2026 GMC Sierra 3500 HD cars and a helpful sales team. Stop by our car dealership today and take a 2026 GMC for a spin.

2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD AT4

  • MSRP$92,110
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Coastal Dune, Interior Color: Jet Black with Kalahari accents, Perforated Front
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD AT4

  • MSRP$92,110
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 3500 HD Truck

2026 GMC Sierra 3500 HD AT4

  • MSRP$91,995
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black with Kalahari accents, Perforated Front
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD AT4

  • MSRP$92,559
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Onyx Black, Interior Color: Jet Black with Kalahari accents, Perforated Front
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD AT4

  • MSRP$90,160
  • Offers$500
  • Auto Mall Price $89,660
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Volcanic Red Tintcoat, Interior Color: Jet Black with Kalahari accents, Perforated Front
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD AT4

  • MSRP$81,370
  • Offers$500
  • Auto Mall Price $80,870
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black with Kalahari accents, Perforated Front
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD Denali

  • MSRP$91,165
  • Offers$500
  • Auto Mall Price $90,665
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Jet Black, Forge Perforated Leather seating surfac
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD Denali Ultimate

  • MSRP$102,765
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Glacier White Tricoat, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD Denali Ultimate

  • MSRP$102,765
  • Offers$500
  • Auto Mall Price $102,265
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Glacier White Tricoat, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD Denali Ultimate

  • MSRP$102,559
  • Offers$500
  • Auto Mall Price $102,059
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Onyx Black, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
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2021 GMC Sierra 3500 HD Truck

2021 GMC Sierra 3500 HD SLE

  • Price$36,000
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Mileage: 82,011 miles, Exterior Color: Pacific Blue Metallic, Interior Color: Jet Black, Cloth seat trim
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2022 GMC Sierra 3500 HD Truck

2022 GMC Sierra 3500 HD Denali

  • Price$64,800
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 41,201 miles, Exterior Color: White Frost Tricoat, Interior Color: Jet Black, Forge Perforated Leather seating surfac
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2024 GMC Sierra 3500 HD Truck

2024 GMC Sierra 3500 HD Denali

  • Price$68,497
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 43,668 miles, Exterior Color: White Frost Tricoat, Interior Color: Jet Black, Forge Perforated Leather seating surfac
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2025 GMC Sierra 3500 HD Truck

2025 GMC Sierra 3500 HD AT4

  • Price$76,900
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 10,241 miles, Exterior Color: Summit White, Interior Color: Jet Black with Kalahari accents, Perforated Front
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2005 GMC Sierra 3500 HD Truck

2005 GMC Sierra 3500 HD WT

  • Price$13,998
Engine: 6.6L DIESEL, 8 CYL, , DI, V8, TURBO HIGH, DURAMAX, Transmission: Automatic, Mileage: 113,312 miles, Exterior Color: Fire Red, Interior Color: SEAT TRIM, CLOTH
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2021 GMC Sierra 3500 HD Truck

2021 GMC Sierra 3500 HD SLE

  • Price$43,200
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Mileage: 55,837 miles, Exterior Color: Summit White, Interior Color: Jet Black, Cloth seat trim
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2018 GMC Sierra 3500 HD Truck

2018 GMC Sierra 3500 HD Denali

  • Price$50,000
Engine: 6.6L Engine: V8 DuraMax Diesel, Turbo, Transmission: Automatic, Mileage: 53,693 miles, Exterior Color: White Frost Tricoat, Interior Color: COCOA/DARK SAND, PERFORATED LEATHER-APPOINTED FRON
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2021 GMC Sierra 3500 HD Truck

2021 GMC Sierra 3500 HD Denali

  • Price$53,000
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 99,689 miles, Exterior Color: White Frost Tricoat, Interior Color: Jet Black, Forge Perforated Leather seating surfac
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2024 GMC Sierra 3500 HD Truck

2024 GMC Sierra 3500 HD Denali

  • Price$70,894
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 47,474 miles, Exterior Color: Sterling Metallic, Interior Color: Atmosphere/Brownstone, Forge Perforated Leather se
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2010 GMC Sierra 3500 HD Truck

2010 GMC Sierra 3500 HD SRW Work Truck

  • PricePlease Call
Engine: 6.0L Engine: , V-8, Transmission: Automatic, Mileage: miles, Exterior Color: Summit White, Interior Color: DARK TITANIUM, CLOTH SEAT TRIM
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View All Pre-Owned GMC Sierra 3500 HD

GMC (1)

Sierra 3500 HD Truck (4)

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 3500 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 03/02/2026. 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

Purchase Allowance

  1. $500 Cash
  • Applies to this new 2026 GMC Sierra 3500 HD

Disclaimer(s)
  • Not available with special financing, lease and some other offers. Must take new retail delivery by 03/02/2026. (See Trims)
  • See State Disclaimer *

2025

Manufacturer Offer

For Well-Qualified Buyers When Financed w/ GM Financial

  1. 3.9% APR for 36 months
  2. 3.9% APR for 48 months
  3. 4.9% APR for 60 months
  4. 5.9% APR for 72 months
  • Applies to this new 2025 GMC Sierra 3500 HD

For Well-Qualified Buyers When Financed w/ GM Financial

Disclaimer(s)
  • 3.9% APR for 48 months for well-qualified buyers when financed w/GM Financial. Monthly payment is $22.53 for every $1000 you finance. Average example down payment is 11.7%. Not available with leases and some other offers. Must take new retail delivery by 03/02/2026. Truth in Lending Act Disclosure: Down payment will vary with APR and credit. For example, 3.9% APR with $2,500 down payment provides for 48 monthly payments of $22.53 per $1000 financed for qualified buyers. 3.9% APR for a term of 36 months corresponds to a monthly cost of $29.48 per $1000 financed. 5.9% APR for a term of 84 months corresponds to a monthly cost of $14.56 per $1000 financed. 5.9% APR for a term of 72 months corresponds to a monthly cost of $16.53 per $1000 financed. 4.9% APR for a term of 60 months corresponds to a monthly cost of $18.83 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

Purchase Allowance

  1. $1,000 Cash
  • Applies to this new 2025 GMC Sierra 3500 HD

Disclaimer(s)
  • Not available with special financing, lease and some other offers. Must take new retail delivery by 03/02/2026. (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