Prices starting at: $47,500

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Learn More About Buying a 2025 GMC Sierra 3500 HD in Brattleboro

Visit Auto Mall for a great deal on a new 2025 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 2025 GMC Sierra 3500 HD cars and a helpful sales team. Stop by our car dealership today and take a 2025 GMC for a spin.

2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD AT4

  • MSRP$92,455
  • Offers$4,000
  • Auto Mall Price $88,455
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 Denali

  • MSRP$93,110
  • Offers$4,000
  • Auto Mall Price $89,110
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Glacier White Tricoat, Interior Color: Atmosphere/Brownstone, Forge Perforated Leather se
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD Denali

  • MSRP$93,785
  • Offers$4,000
  • Auto Mall Price $89,785
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Glacier White Tricoat, Interior Color: Atmosphere/Brownstone, Forge Perforated Leather se
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2026 GMC Sierra 3500 HD Truck

2026 GMC Sierra 3500 HD Denali Ultimate

  • MSRP$101,735
  • Offers$4,000
  • Auto Mall Price $97,735
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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2025 GMC Sierra 3500 HD Truck

2025 GMC Sierra 3500 HD Denali Ultimate

  • MSRP$99,940
  • Offers$8,000
  • Auto Mall Price $91,940
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
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2025 GMC Sierra 3500 HD Truck

2025 GMC Sierra 3500 HD Denali Ultimate

  • MSRP$100,170
  • Offers$8,000
  • Auto Mall Price $92,170
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
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2025 GMC Sierra 3500 HD Truck

2025 GMC Sierra 3500 HD Pro

  • MSRP$56,985
  • Offers$1,000
  • Auto Mall Price $55,985
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black, Cloth seat trim
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2025 GMC Sierra 3500 HD Truck

2025 GMC Sierra 3500 HD Pro

  • MSRP$66,020
  • Offers$1,000
  • Auto Mall Price $65,020
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black, Cloth seat trim
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2025 GMC Sierra 3500 HD Truck

2025 GMC Sierra 3500 HD Pro

  • MSRP$55,170
  • Offers$1,000
  • Auto Mall Price $54,170
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Cardinal Red, Interior Color: Jet Black, Cloth seat trim
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2025 GMC Sierra 3500 HD Truck

2025 GMC Sierra 3500 HD Pro

  • MSRP$56,985
  • Offers$1,000
  • Auto Mall Price $55,985
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black, Cloth seat trim
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View All New GMC Sierra 3500 HD
2020 GMC Sierra 3500 HD Truck

2020 GMC Sierra 3500 HD AT4

  • Price$50,788
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 80,529 miles, Exterior Color: Onyx Black, Interior Color: Jet Black with Kalahari accents, Perforated leathe
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2019 GMC Sierra 3500 HD Truck

2019 GMC Sierra 3500 HD Denali

  • Price$39,800
Engine: 6.6L Engine: V8 DuraMax Diesel, Turbo, Transmission: Automatic, Mileage: 113,266 miles, Exterior Color: White Frost Tricoat, Interior Color: JET BLACK, PERFORATED LEATHER-APPOINTED FRONT SEAT
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2024 GMC Sierra 3500 HD Truck

2024 GMC Sierra 3500 HD Denali DRW

  • Price$74,900
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 43,667 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 Ultimate

  • Price$74,998
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 40,419 miles, Exterior Color: White Frost Tricoat, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
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2024 GMC Sierra 3500 HD Truck

2024 GMC Sierra 3500 HD Denali Ultimate

  • Price$75,880
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 41,009 miles, Exterior Color: White Frost Tricoat, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
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2024 GMC Sierra 3500 HD Truck

2024 GMC Sierra 3500 HD Pro

  • Price$42,987
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Mileage: 45,695 miles, Exterior Color: Onyx Black, Interior Color: Jet Black, Cloth seat trim
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2022 GMC Sierra 3500 HD Truck

2022 GMC Sierra 3500 HD Denali

  • PricePlease Call
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 40,884 miles, Exterior Color: White Frost Tricoat, Interior Color: Jet Black, Forge Perforated Leather seating surfac
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2022 GMC Sierra 3500 HD Truck

2022 GMC Sierra 3500 HD Denali

  • Price$59,480
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Mileage: 21,159 miles, Exterior Color: Summit White, 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 Ultimate

  • Price$76,500
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 36,380 miles, Exterior Color: Onyx Black, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
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View All Pre-Owned GMC Sierra 3500 HD

GMC (1)

Sierra 3500 HD Truck (8)

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 12/01/2025. 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

2026 Sierra HD fall super savings

  1. $3,500 Cash
  • Applies to this new 2026 GMC Sierra 3500 HD

Disclaimer(s)
  • Applies to everyone (See Trims)
  • See State Disclaimer *
Manufacturer Offer

Auto mall 2026 Sierra HD

  1. $2,000 Cash
  • Applies to this new 2026 GMC Sierra 3500 HD

Disclaimer(s)
  • Applies to everyone not compatible with special APR (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 12/01/2025. (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 12/01/2025. 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

Auto Mall 2025 HD Denali & At4 sell down

  1. $7,000 Cash
  • Applies to this new 2025 GMC Sierra 3500 HD

Disclaimer(s)
  • Applies to everyone not compatible with special APR (See Trims)
  • See State Disclaimer *
Manufacturer Offer

2025 GMC Sierra HD PRO/SLE Super Savings

  1. $4,000 Cash
  • Applies to this new 2025 GMC Sierra 3500 HD

Disclaimer(s)
  • Applies to everyone (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 12/01/2025. (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