Prices starting at: $47,900

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Learn More About Buying a 2026 GMC Sierra 3500 HD Chassis Cab in KEENE

Visit Fairfield's Buick GMC for a great deal on a new 2026 GMC Sierra 3500 HD Chassis Cab. Our sales team is ready to show you all of the features that you will find in the GMC Sierra 3500 HD Chassis Cab 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 3500 HD Chassis Cab 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 Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab Pro

Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black, Cloth seat trim
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2026 GMC Sierra 3500 HD Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab Pro

Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Jet Black, Cloth seat trim
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2026 GMC Sierra 3500 HD Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab Pro

  • MSRP$64,803
  • Dealer Discount$2,592
  • Discounted Price$62,211
  • Doc Fees$399
  • Sale Price$62,610
  • Offers$1,000
  • Final Price$61,610
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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2026 GMC Sierra 3500 HD Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab SLE

  • MSRP$71,483
  • Dealer Discount$1,430
  • Discounted Price$70,053
  • Doc Fees$399
  • Sale Price$70,452
  • Offers$1,000
  • Final Price$69,452
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Onyx Black, Interior Color: Jet Black, Cloth seat trim
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2026 GMC Sierra 3500 HD Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab SLE

  • MSRP$71,483
  • Doc Fees$399
  • Sale Price$71,882
  • Offers$1,000
  • Final Price$70,882
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Jet Black, Cloth seat trim
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2026 GMC Sierra 3500 HD Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab SLE

  • MSRP$73,103
  • Dealer Discount$1,462
  • Discounted Price$71,641
  • Doc Fees$399
  • Sale Price$72,040
  • Offers$1,000
  • Final Price$71,040
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Onyx Black, Interior Color: Jet Black, Cloth seat trim
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2026 GMC Sierra 3500 HD Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab SLE

  • MSRP$70,988
  • Doc Fees$399
  • Sale Price$71,387
  • Offers$1,000
  • Final Price$70,387
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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2026 GMC Sierra 3500 HD Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab SLE

  • MSRP$61,423
  • Dealer Discount$1,228
  • Discounted Price$60,195
  • Doc Fees$399
  • Sale Price$60,594
  • Offers$1,000
  • Final Price$59,594
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Jet Black, Cloth seat trim
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2026 GMC Sierra 3500 HD Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab SLE

  • MSRP$71,693
  • Dealer Discount$1,434
  • Discounted Price$70,259
  • Doc Fees$399
  • Sale Price$70,658
  • Offers$1,000
  • Final Price$69,658
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Jet Black, Cloth seat trim
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2026 GMC Sierra 3500 HD Chassis Cab Truck

2026 GMC Sierra 3500 HD Chassis Cab SLE

  • MSRP$71,198
  • Dealer Discount$1,424
  • Discounted Price$69,774
  • Doc Fees$399
  • Sale Price$70,173
  • Offers$1,000
  • Final Price$69,173
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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View All New GMC Sierra 3500 HD Chassis Cab
2013 GMC Sierra 3500 HD Chassis Cab Chassis Cab Truck

2013 GMC Sierra 3500 HD Chassis Cab Work Truck

Engine: 6.0L Engine: , V-8, SFI, FlexFuel w/ E63 only, Transmission: Automatic, Mileage: miles, Exterior Color: Special Paint, Interior Color: DARK TITANIUM, CLOTH
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View All Pre-Owned GMC Sierra 3500 HD Chassis Cab

GMC (1)

Sierra 3500 HD Chassis Cab Truck (2)

2026

Manufacturer Offer

No Monthly Payments for 90 Days 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 Chassis Cab

No Monthly Payments for 90 Days for Well-Qualified Buyers When Financed w/ GM Financial

Disclaimer(s)
  • Deferred monthly payments for 90 days. Finance charges accrue from date of financing. Must finance with GM Financial. Down payment required at signing, if applicable. Offer not available in PA. Some customers may not qualify. Not available with lease and some other offers. 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 08/03/2026. 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. $1,000 Cash
  • Applies to this new 2026 GMC Sierra 3500 HD Chassis Cab

Disclaimer(s)
  • Not available with special financing, lease and some other offers. Must take new retail delivery by 08/03/2026. (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