Prices starting at: $48,200

View photos, watch videos and get a quote on a new 2026 GMC Sierra 3500 HD in Marshalltown, IA.

Request More Info

* Indicates a required field

Learn More About Buying a 2026 GMC Sierra 3500 HD in Marshalltown

Visit Karl GMC of Marshalltown 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 Marshalltown 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 Denali

  • MSRP$94,275
  • Dealer Discount$1,500
  • Featured Price $92,775
  • Doc Fee$180
  • Karl Price$92,955
  • Offers$2,000
  • Final Price$90,955
  • Conditional Offers$1,000
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Glacier White Tricoat, Interior Color: Jet Black, Forge Perforated Leather seating surfac
View Details
2026 GMC Sierra 3500 HD Truck Crew Cab

2026 GMC Sierra 3500 HD Denali Ultimate DRW

  • MSRP$105,340
  • Dealer Discount$6,320
  • Featured Price $99,020
  • Doc Fee$180
  • Karl Price$99,200
  • Conditional Offers$1,000
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Summit White, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
View Details
2026 GMC Sierra 3500 HD Truck Regular Cab

2026 GMC Sierra 3500 HD SLE

  • MSRP$67,515
  • Dealer Discount$3,376
  • Featured Price $64,139
  • Doc Fee$180
  • Karl Price$64,319
  • Offers$1,000
  • Final Price$63,319
  • Conditional Offers$1,000
Engine: 6.6L V8 Gas engine, Transmission: Automatic, Exterior Color: Sterling Metallic, Interior Color: Jet Black, Cloth seat trim
View Details
2026 GMC Sierra 3500 HD Truck Crew Cab

2026 GMC Sierra 3500 HD SLT

  • MSRP$86,900
  • Dealer Discount$6,952
  • Featured Price $79,948
  • Doc Fee$180
  • Karl Price$80,128
  • Offers$1,000
  • Final Price$79,128
  • Conditional Offers$1,000
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Exterior Color: Volcanic Red Tintcoat, Interior Color: Jet Black, Perforated Leather-appointed front seat
View Details
View All New GMC Sierra 3500 HD
2024 GMC Sierra 3500 HD Truck

2024 GMC Sierra 3500 HD Denali

  • Price$67,900
  • Doc Fee$180
  • Final Price$68,080
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 68,238 miles, Exterior Color: Sterling Metallic, Interior Color: Jet Black, Forge Perforated Leather seating surfac
View Details
2023 GMC Sierra 3500 HD Truck

2023 GMC Sierra 3500 HD AT4

  • Price$63,900
  • Doc Fee$180
  • Final Price$64,080
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 48,640 miles, Exterior Color: Onyx Black, Interior Color: Jet Black with Kalahari accents, Perforated Front
View Details
2024 GMC Sierra 3500 HD Truck

2024 GMC Sierra 3500 HD Denali Ultimate

  • Price$78,512
  • Doc Fee$180
  • Final Price$78,692
Engine: 6.6L Duramax Turbo-Diesel V8 engine, Transmission: Automatic, Mileage: 31,582 miles, Exterior Color: White Frost Tricoat, Interior Color: Alpine Umber, Full Grain Leather seating surfaces
View Details
View All Pre-Owned GMC Sierra 3500 HD

GMC (1)

Sierra 3500 HD Truck (4)

2026

Manufacturer Offer

No Monthly Payments for 130 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

No Monthly Payments for 130 Days for Well-Qualified Buyers When Financed w/ GM Financial

Disclaimer(s)
  • Deferred monthly payments for 130 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 06/30/2026. 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. $2,000 Cash
  • Applies to this new 2026 GMC Sierra 3500 HD

Disclaimer(s)
  • Not available with some other offers. Must take new retail delivery by 06/30/2026. (See Trims)
  • See State Disclaimer *
Manufacturer Offer

GM Military Offer

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

Disclaimer(s)
  • Eligible military personnel includes Active Duty members, Reservists, National Guard members, Veterans and Retirees of the U.S. Army, Navy, Air Force, Marine Corps and Coast Guard. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmmilitaryappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/04/2027. (See Trims)
  • See State Disclaimer *
Manufacturer Offer

GM First Responder Offer

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

Disclaimer(s)
  • Must be a current Firefighter, Police, EMT/Paramedic, or 911 Dispatcher. First Responders employed by federal, state or municipal governments may be subject to restrictions that limit their ability to accept this offer. Accordingly, this offer is void unless permitted by applicable federal, state and municipal laws, regulations, rules, ordinances, policies, codes of conduct, and other directives or standards regarding ethics and gift acceptance by the applicable federal, state or municipal employees. By accepting this offer, you verify that doing so complies with all laws, regulations, policies or other restrictions regarding ethics or gift acceptance that apply to you. Eligible participants are able to sponsor their spouse. At participating dealers only. Visit gmfirstresponderappreciation.com for program eligibility details and for a list of eligible vehicles. Not available with some other offers. Must provide authorization number to participating dealer prior to or at time of vehicle delivery to receive offer. Must take new retail delivery by 01/04/2027. (See Trims)
  • See State Disclaimer *

Interested in a different GMC? Click a link below and find the GMC that fits your lifestyle.

 

GMC Acadia
GMC Canyon
GMC HUMMER EV Pickup
GMC Savana 2500
GMC Savana 3500
GMC Savana Cutaway
GMC Savana Cutaway 4500
GMC Sierra 1500
GMC Sierra 2500 HD
GMC Sierra 3500 HD
GMC Sierra 3500 HD Chassis Cab
GMC Sierra EV
GMC Terrain
GMC Yukon
GMC Yukon XL
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