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GMC Sierra 3500 Trucks for Sale in Colorado

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Cab Chassis
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Pickup
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Less than $400,000
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Make, Model, and Trim
Make
GMC
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Model
Sierra 3500
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AT4
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Base
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Denali
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Denali Ultimate
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SLT
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Regular
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Cab Chassis
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Pickup
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4WD/4x4/AWD
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Diesel
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Gas/E85
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8
9
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Automatic
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Black
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Gray
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White
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Medium
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3
3
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State
Colorado
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Used 2025 GMC Sierra 3500 Denali Ultimate Crew Cab

$90,079 List Price
$88,995
speed 6,398 mi
sell
Key features
  • Diesel
  • Duramax 6.6L V-8 diesel direct injection intercooled turbo diesel engine with 470HP
  • 4x4
location_on
Mike Shaw Chrysler Dodge Jeep Ram preview Test Site
Greeley, CO (590.8 mi)

Used 2025 GMC Sierra 3500 Denali Ultimate Crew Cab

contact for price
speed 23,399 mi
sell
Key features
  • Diesel
  • 4x4
  • Crew Cab
location_on
Weld County Garage - GMC Test Site
Greeley, CO (590.8 mi)

Used 2015 GMC Sierra 3500 Regular Cab Cab Chassis

$23,295
speed 106,095 mi
sell
Key features
  • Gas/E85
  • Regular Cab
  • RWD
location_on
Country Truck & Auto LLC preview Test Site
Fort Lupton, CO (595.9 mi)

Used 2018 GMC Sierra 3500 Denali Crew Cab

$41,988
speed 151,096 mi
sell
Key features
  • Diesel
  • 4WD
  • Crew Cab
location_on
Country Truck & Auto LLC preview Test Site
Fort Lupton, CO (595.9 mi)

Used 2025 GMC Sierra 3500 Denali Ultimate Crew Cab

$79,160
speed 39,870 mi
sell
Key features
  • Diesel
  • 4x4
  • Crew Cab
location_on
Loveland Ford Lincoln preview Test Site
Loveland, CO (611.3 mi)

Used 2020 GMC Sierra 3500 Denali Crew Cab

contact for price
speed 104,383 mi
sell
Key features
  • Diesel
  • 4x4
  • Crew Cab
location_on
Loveland Ford Lincoln preview Test Site
Loveland, CO (611.3 mi)

Used 2024 GMC Sierra 3500 SLT Crew Cab

$56,563
speed 120,452 mi
sell
Key features
  • Diesel
  • 4x4
  • Crew Cab
location_on
Loveland Ford Lincoln preview Test Site
Loveland, CO (611.3 mi)

Used 2025 GMC Sierra 3500 Denali Crew Cab

$79,110 List Price
$73,924
speed 16,277 mi
sell
Key features
  • Diesel
  • 6.6L Duramax Turbo-Diesel V8 engine
  • 4WD
location_on
Bozarth Chevrolet preview Test Site
Lone Tree, CO (611.4 mi)

Used 2021 GMC Sierra 3500 AT4 Crew Cab

$60,382
speed 57,420 mi
sell
Key features
  • Diesel
  • Turbocharged Diesel V8 6.6L/
  • 4WD
location_on
Phil Long Ford Motor City preview Test Site
Colorado Springs, CO (625.4 mi)