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GMC Sierra 3500 Trucks for Sale in Colorado

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Less than $400,000
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New 2026 GMC Sierra 3500 Regular Cab 84 CA Cab Chassis

$55,128
sell
Key features
  • Gasoline
  • 84 CA
  • 4WD
location_on
Weld County Garage - GMC
Greeley, CO
(970) 528-5373

New 2026 GMC Sierra 3500 Regular Cab 60 CA Cab Chassis

$80,578
sell
Key features
  • Diesel
  • 60 CA
  • 4WD
location_on
Transwest GMC
Henderson, CO
(720) 439-3324

New 2026 GMC Sierra 3500 Pro Crew Cab

$70,740 MSRP
$65,790
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Johnson Auto Plaza GMC
Brighton, CO
(720) 730-4410

New 2026 GMC Sierra 3500 Pro Crew Cab

$72,425 MSRP
$67,379
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Johnson Auto Plaza GMC
Brighton, CO
(720) 730-4410

New 2026 GMC Sierra 3500 Pro Crew Cab

$70,005
sell
Key features
  • Diesel
  • 6.6L Duramax Turbo-Diesel V8 engine
  • 4WD
location_on
Transwest GMC
Henderson, CO
(720) 439-3324

New 2026 GMC Sierra 3500 Pro Crew Cab

$70,005
sell
Key features
  • Diesel
  • 6.6L Duramax Turbo-Diesel V8 engine
  • 4WD
location_on
Transwest GMC
Henderson, CO
(720) 439-3324

New 2026 GMC Sierra 3500 AT4 Crew Cab

$91,290
sell
Key features
  • Diesel
  • 6.6L Duramax Turbo-Diesel V8 engine
  • 4WD
location_on
Transwest GMC
Henderson, CO
(720) 439-3324

New 2026 GMC Sierra 3500 Denali Crew Cab

$92,120
sell
Key features
  • Diesel
  • 6.6L Duramax Turbo-Diesel V8 engine
  • 4WD
location_on
Transwest GMC
Henderson, CO
(720) 439-3324

New 2026 GMC Sierra 3500 Pro Crew Cab

$70,740 MSRP
$65,790
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Johnson Auto Plaza GMC
Brighton, CO
(720) 730-4410

New 2026 GMC Sierra 3500 SLT Crew Cab

$86,220
sell
Key features
  • Diesel
  • 6.6L Duramax Turbo-Diesel V8 engine
  • 4WD
location_on
Transwest GMC
Henderson, CO
(720) 439-3324

New 2026 GMC Sierra 3500 Denali Ultimate Crew Cab

$108,235
sell
Key features
  • Diesel
  • 6.6L Duramax Turbo-Diesel V8 engine
  • 4WD
location_on
Transwest GMC
Henderson, CO
(720) 439-3324

New 2026 GMC Sierra 3500 Pro Crew Cab

$70,130
sell
Key features
  • Diesel
  • Turbocharged Diesel V8 6.6L/
  • 4WD
location_on
Weld County Garage - GMC
Greeley, CO
(970) 528-5373

New 2026 GMC Sierra 3500 AT4 Crew Cab

$91,290
sell
Key features
  • Diesel
  • 6.6L Duramax Turbo-Diesel V8 engine
  • 4WD
location_on
Transwest GMC
Henderson, CO
(720) 439-3324

New 2026 GMC Sierra 3500 Pro Crew Cab

$70,130
sell
Key features
  • Diesel
  • Turbocharged Diesel V8 6.6L/
  • 4WD
location_on
Weld County Garage - GMC
Greeley, CO
(970) 528-5373

Used 2023 GMC Sierra 3500 Crew Cab Flatbed Truck

$42,593
speed 98,839 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Transwest GMC
Henderson, CO
(720) 439-3324

Used 2019 GMC Sierra 3500 Crew Cab Flatbed Truck

$34,500
sell
Key features
  • Diesel
  • 4x4
  • Crew Cab
location_on
DTI Trucks - Wheat Ridge
Wheat Ridge, CO
(303) 990-8768

Used 2011 GMC Sierra 3500 Extended Cab Flatbed Truck

$29,400
speed 60,290 mi
sell
Key features
  • Diesel
  • 4WD
  • Extended Cab
location_on
Columbine Ford
Rifle, CO
(970) 410-8406

Used 2017 GMC Sierra 3500 Crew Cab Flatbed Truck

$32,700
speed 113,246 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
John Elway Chevrolet
Englewood, CO
(303) 309-1725

Used 2025 GMC Sierra 3500 Denali Ultimate Crew Cab

$83,106
speed 23,916 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Loveland Ford Lincoln
Loveland, CO
(970) 844-8411

Used 2023 GMC Sierra 3500 Pro Crew Cab

$41,990
speed 100,132 mi
sell
Key features
  • Diesel
  • 6.6L 8 Cylinders
  • 4x4
location_on
Gaylord Sales & Leasing
Aurora, CO
(303) 309-3299

Used 2025 GMC Sierra 3500 Denali Crew Cab

$78,546
speed 5,426 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Phil Long Ford Motor City
Colorado Springs, CO
(719) 284-2514

Used 2016 GMC Sierra 3500 SLT Crew Cab

$40,556
speed 106,761 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Mike Maroone Ford Longmont
Longmont, CO
(970) 601-8299

Used 2019 GMC Sierra 3500 Base Crew Cab

$27,890
speed 113,326 mi
sell
Key features
  • Gas/E85
  • 6.0L 8 Cylinders
  • 4x4
location_on
Gaylord Sales & Leasing
Aurora, CO
(303) 309-3299

Used 2024 GMC Sierra 3500 Denali Crew Cab

$59,999
speed 124,976 mi
sell
Key features
  • Diesel
  • 6.6
  • 4WD
location_on
Red's Auto and Truck
Longmont, CO
(303) 854-6240

Used 2017 GMC Sierra 3500 Denali Crew Cab

$49,999
speed 71,374 mi
sell
Key features
  • Diesel
  • 6.6
  • 4WD
location_on
Red's Auto and Truck
Longmont, CO
(303) 854-6240

Used 2020 GMC Sierra 3500 SLT Crew Cab

$51,966
speed 68,661 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Fort Collins Dodge Chrysler Ram
Fort Collins, CO
(970) 632-9052

Used 2023 GMC Sierra 3500 Pro Crew Cab

$46,999
speed 73,045 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Red's Auto and Truck
Longmont, CO
(303) 854-6240

Used 2021 GMC Sierra 3500 Denali Crew Cab

$54,685
speed 125,831 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Loveland Ford Lincoln
Loveland, CO
(970) 844-8411

Used 2024 GMC Sierra 3500 Denali Ultimate Crew Cab

$76,899
speed 37,255 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Phil Long Ford of Chapel Hills
Colorado Springs, CO
(719) 212-2785

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