CarGurus Logo Homepage Link
  • Buy
    • Used cars
    • New cars
    • Certified pre-owned
    • Start your purchase online
    • Dealerships near me
  • Sell
    • Sell my car
    • Car values
    • Sell my car FAQs
  • Finance
    • Prequalify for financing
    • How does it work?
    • Financing FAQs
  • Research
    • Test drive reviews
    • Price trends
    • Tips & advice
    • Electric cars
    • Compare cars
  • Discover
    The latest way to shop:
    smarter research, better
    listings.
  • Saved cars & searches
  • Sign in / Register
    • My account
    • Saved searches
    • Saved cars
    • Recommended cars
    • Browsing history
    • Financing dashboard
      • United States (EN)
      • Estados Unidos (ES)
      • Canada (EN)
      • Canada (FR)
      • United Kingdom

Used GMC Sierra 3500HD SLT for Sale near Firestone, CO

47 results
Firestone, CO
2021 GMC Sierra 3500HD SLT Crew Cab 4WD ClearShift

2021 GMC Sierra 3500HD

SLT Crew Cab 4WD

119,496 miles

$44,979

Fair Deal
Highlands Ranch, CO
38 mi away
Year:
2021
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
6.6L V8 Biodiesel
Exterior color:
Onyx Black
Fuel type:
Biodiesel
Interior color:
Jet Black
Transmission:
10-Speed Automatic
Mileage:
119,496
Stock number:
JV184830
VIN:
1GT49UEY4MF184830

Sponsored

2024 GMC Sierra 3500HD SLT Crew Cab 4WD

2024 GMC Sierra 3500HD

SLT Crew Cab 4WD

18,005 miles

$67,988

Fair Deal
Highlands Ranch, CO
38 mi away
Year:
2024
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Onyx Black
Fuel type:
Biodiesel
Interior color:
Jet Black
Transmission:
10-Speed Automatic
Mileage:
18,005
Stock number:
JV196718
VIN:
1GT49UEY5RF196718

Sponsored

2025 GMC Sierra 3500HD SLT Crew Cab 4WD

2025 GMC Sierra 3500HD

SLT Crew Cab 4WD

16,375 miles

$64,979

Great Deal
Loveland, CO
22 mi away
Year:
2025
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
401 hp 6.6L V8
Exterior color:
Sterling Metallic
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
10-Speed Automatic
Mileage:
16,375
Stock number:
KM270919
VIN:
1GT4UUE78SF270919

Sponsored

2025 GMC Sierra 3500HD SLT Crew Cab 4WD

2025 GMC Sierra 3500HD

SLT Crew Cab 4WD

16,375 miles

$64,979

Great Deal
Loveland, CO
22 mi away
Year:
2025
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
401 hp 6.6L V8
Exterior color:
Sterling Metallic
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
10-Speed Automatic
Mileage:
16,375
Stock number:
KM270919
VIN:
1GT4UUE78SF270919

2024 GMC Sierra 3500HD SLT Crew Cab 4WD

2024 GMC Sierra 3500HD

SLT Crew Cab 4WD

18,005 miles

$67,988

Fair Deal
Highlands Ranch, CO
38 mi away
Year:
2024
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Onyx Black
Fuel type:
Biodiesel
Interior color:
Jet Black
Transmission:
10-Speed Automatic
Mileage:
18,005
Stock number:
JV196718
VIN:
1GT49UEY5RF196718

2021 GMC Sierra 3500HD SLT Crew Cab 4WD

2021 GMC Sierra 3500HD

SLT Crew Cab 4WD

119,496 miles

$44,979

Fair Deal
Highlands Ranch, CO
38 mi away
Year:
2021
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
6.6L V8 Biodiesel
Exterior color:
Onyx Black
Fuel type:
Biodiesel
Interior color:
Jet Black
Transmission:
10-Speed Automatic
Mileage:
119,496
Stock number:
JV184830
VIN:
1GT49UEY4MF184830

Preparing for a close up...

Photos coming soon

2025 GMC Sierra 3500HD

SLT Crew Cab 4WD

34,300 miles

$65,989

Fair Deal
Highlands Ranch, CO
38 mi away
Year:
2025
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Summit White
Fuel type:
Biodiesel
Interior color:
Jet Black
Transmission:
10-Speed Automatic
Mileage:
34,300
Stock number:
JV133450
VIN:
1GT4UUEY9SF133450

Preparing for a close up...

Photos coming soon

2024 GMC Sierra 3500HD

SLT Crew Cab 4WD

50,815 miles

$62,997

Fair Deal
Thornton, CO
17 mi away
Year:
2024
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Summit White
Fuel type:
Biodiesel
Interior color:
Black
Transmission:
Automatic
Mileage:
50,815
Stock number:
8047GS
VIN:
1GT49UEY1RF321651

Preparing for a close up...

Photos coming soon

2020 GMC Sierra 3500HD

SLT Crew Cab 4WD

68,661 miles

$53,886

Fair Deal
Fort Collins, CO
30 mi away
Year:
2020
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
6.6L V8 Biodiesel
Exterior color:
Summit White
Fuel type:
Biodiesel
Interior color:
Dark Walnut/Slate
Transmission:
Automatic
Mileage:
68,661
Stock number:
J10757
VIN:
1GT49UEY3LF146407

Preparing for a close up...

Photos coming soon

2022 GMC Sierra 3500HD

SLT Crew Cab 4WD

80,927 miles

$53,970

Fair Deal
Loveland, CO
21 mi away
Year:
2022
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
6.6L V8 Biodiesel
Exterior color:
Black
Fuel type:
Biodiesel
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
80,927
Stock number:
336825C
VIN:
1GT49UEY5NF281648

Preparing for a close up...

Photos coming soon

2020 GMC Sierra 3500HD

SLT Crew Cab 4WD

68,661 miles

$53,886

Fair Deal
Fort Collins, CO
30 mi away
Year:
2020
Make:
GMC
Model:
Sierra 3500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
6.6L V8 Biodiesel
Exterior color:
Summit White
Fuel type:
Biodiesel
Interior color:
Dark Walnut/Slate
Transmission:
Automatic
Mileage:
68,661
Stock number:
J10757
VIN:
1GT49UEY3LF146407

Sponsored

  1. Home
  2. / Used Cars
  3. / GMC Sierra 3500HD
  4. / SLT
  5. / Colorado
  6. / Firestone

  • GMC Sierra 3500HD Denali in Firestone CO

  • GMC Sierra 3500HD SLT in Firestone CO

  • GMC Sierra 3500HD SLE in Firestone CO

  • GMC Sierra 3500HD Base in Firestone CO

  • GMC Sierra 3500HD Work Truck in Firestone CO

  • GMC Sierra 3500HD SLE1 in Firestone CO

  • GMC Sierra 3500HD SLE2 in Firestone CO

  • GMC Sierra 3500HD RWD

  • GMC Sierra 3500HD in Longmont CO

  • GMC Sierra 3500HD in Denver CO

  • GMC Sierra 3500HD in Fort Collins CO

  • GMC Sierra 3500HD in Castle Rock CO

  • GMC Sierra 3500HD in Cheyenne WY

  • GMC Sierra 3500HD in Colorado Springs CO

  • GMC Sierra 3500HD in Laramie WY

  • GMC Sierra 3500HD in Pueblo CO

  • GMC Sierra 3500HD in Gunnison CO

  • GMC Sierra 3500HD in Firestone CO

  • OBS 1990s-era Chevy and Ford Trucks for Sale in Firestone CO

  • Used GMC Electric Cars for Sale

  • Lifted GMC trucks for sale in Firestone CO

  • Reliable Cars for Sale in Firestone CO

  • One Ton Trucks for Sale in Firestone CO

  • GM Certified Preowned Vehicles for Sale Near Firestone CO

  • Reliable Cheap Cars For Sale in Firestone CO

  • 2019 GMC Sierra 3500HD SLT in Firestone CO

  • 2018 GMC Sierra 3500HD SLT in Firestone CO

  • 2017 GMC Sierra 3500HD SLT in Firestone CO

  • 2016 GMC Sierra 3500HD SLT in Firestone CO

  • 2015 GMC Sierra 3500HD SLT in Firestone CO

  • 2014 GMC Sierra 3500HD SLT in Firestone CO

  • All Used Cars

  • Manual Transmission Cars

  • Luxury Cars

  • Cars with Red Interior

  • Cheap Manual Cars

  • Hybrid Cars

  • Sports Cars

  • Electric SUVs

  • Cheap Trucks

  • Small Cars

  • Third Row SUVs

  • Three Quarter Ton Trucks

  • Lifted Trucks

  • Manual Transmission Trucks

  • Diesel Trucks

  • Hybrid SUVs

  • Dually Trucks

  • One Ton Trucks

  • Cheap SUVs

  • Lifted Ford Trucks

  • 4x4 Trucks

  • Work Trucks

  • AWD SUVs

  • Ford Trucks

  • Chevrolet Trucks

  • Toyota Trucks

  • Trucks Under $10,000

  • Cars Under $15,000

  • Sports Cars Under $20,000

  • Trucks Under $20,000

  • Used Sedans for Sale with Low Mileage in Firestone

  • Used SUVs / Crossovers for Sale with Low Mileage in Firestone

  • Used Hatchbacks for Sale with Low Mileage in Firestone

  • Used Convertibles for Sale with Low Mileage in Firestone

  • Used Vans for Sale with Low Mileage in Firestone

  • Used Minivans for Sale with Low Mileage in Firestone

  • Used Pickup Trucks for Sale with Low Mileage in Firestone

  • Used Coupes for Sale with Low Mileage in Firestone

  • Used Wagons for Sale with Low Mileage in Firestone

  • Johnson Auto Plaza

  • Shortline Buick-GMC

  • Mike Maroone Chevrolet Buick GMC Longmont

  • Mike Maroone Cadillac Buick GMC

  • AutoNation Buick GMC West

  • Transwest GMC Isuzu

  • Loveland Buick GMC

  • Markley Motors

Connect with us
Download our app
Download on the App Store Get it on Google Play
  • Company
  • About CarGurus
  • Our team
  • Press
  • Investor relations
  • Price trends
  • Careers
  • Advertise with CarGurus
  • For dealers
  • Dealer signup
  • Dealer resources
  • Terms
  • Terms of use
  • Privacy policy
  • Interest-based ads
  • Security
  • Help
  • Help center
  • Contact us
Click for the BBB Business Review of this Auto Listing Service in Cambridge MA
    • United States (EN)
    • Estados Unidos (ES)
    • Canada (EN)
    • Canada (FR)
    • United Kingdom

© 2026 CarGurus, Inc., All Rights Reserved.