CarGurus Logo Homepage Link
  • Buy
    • Used cars
    • New cars
    • Certified pre-owned
    • Start your purchase online
    • Dealerships near me
  • Sell
    • Sell my car
    • 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 2500HD SLT for Sale near Fort Collins, CO

90 results
Fort Collins, CO
2015 GMC Sierra 2500HD SLT Crew Cab SB 4WD Sterling Auto Sales

2015 GMC Sierra 2500HD

SLT Crew Cab SB 4WD

100,891 miles

$34,500

Great Deal
Franktown, CO
83 mi away
Year:
2015
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
397 hp 6.6L V8 Diesel
Exterior color:
Silver
Fuel type:
Diesel
Transmission:
6-Speed Automatic
Mileage:
100,891
Stock number:
25530
VIN:
1GT12ZE87FF671138

Sponsored

2010 GMC Sierra 2500HD SLT Crew Cab 4WD

2010 GMC Sierra 2500HD

SLT Crew Cab 4WD

109,709 miles

$28,492

Fair Deal
Boulder, CO
39 mi away
Year:
2010
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
365 hp 6.6L V8 Diesel
Exterior color:
Stealth Gray Metallic
Fuel type:
Diesel
Interior color:
Black (Ebony)
Transmission:
6-Speed Automatic
Mileage:
109,709
Stock number:
261208A
VIN:
1GT4K1B65AF125691

Sponsored

2016 GMC Sierra 2500HD SLT Crew Cab SB 4WD

2016 GMC Sierra 2500HD

SLT Crew Cab SB 4WD

100,966 miles

$38,998

Fair Deal
Longmont, CO
29 mi away
Year:
2016
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
397 hp 6.6L V8 Diesel
Exterior color:
Gray (Iridium Metallic)
Fuel type:
Diesel
Interior color:
Red
Transmission:
6-Speed Automatic
Mileage:
100,966
Stock number:
L318596
VIN:
1GT12TE89GF161615

Sponsored

2020 GMC Sierra 2500HD SLT Crew Cab 4WD

2020 GMC Sierra 2500HD

SLT Crew Cab 4WD

112,103 miles

$37,459

Good Deal
Lone Tree, CO
70 mi away
Year:
2020
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
401 hp 6.6L V8
Exterior color:
Quicksilver Metallic
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
6-Speed Automatic
Mileage:
112,103
Stock number:
LF117573
VIN:
1GT49NE70LF117573

2010 GMC Sierra 2500HD SLT Crew Cab 4WD

2010 GMC Sierra 2500HD

SLT Crew Cab 4WD

109,709 miles

$28,492

Fair Deal
Boulder, CO
39 mi away
Year:
2010
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
365 hp 6.6L V8 Diesel
Exterior color:
Stealth Gray Metallic
Fuel type:
Diesel
Interior color:
Black (Ebony)
Transmission:
6-Speed Automatic
Mileage:
109,709
Stock number:
261208A
VIN:
1GT4K1B65AF125691

2022 GMC Sierra 2500HD SLT Crew Cab 4WD

2022 GMC Sierra 2500HD

SLT Crew Cab 4WD

63,188 miles

$46,995

Good Deal
Frederick, CO
32 mi away
Year:
2022
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
401 hp 6.6L V8
Exterior color:
Quicksilver Metallic
Fuel type:
Gasoline
Transmission:
6-Speed Automatic
Mileage:
63,188
Stock number:
A21050
VIN:
1GT49NE75NF338878

Preparing for a close up...

Photos coming soon

2016 GMC Sierra 2500HD

SLT Crew Cab SB 4WD

100,966 miles

$38,998

Fair Deal
Longmont, CO
29 mi away
Year:
2016
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
397 hp 6.6L V8 Diesel
Exterior color:
Gray (Iridium Metallic)
Fuel type:
Diesel
Interior color:
Red
Transmission:
6-Speed Automatic
Mileage:
100,966
Stock number:
L318596
VIN:
1GT12TE89GF161615

Preparing for a close up...

Photos coming soon

2018 GMC Sierra 2500HD

SLT Crew Cab SB 4WD

11,049 miles

$39,376

Great Deal
Highlands Ranch, CO
70 mi away
Year:
2018
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
360 hp 6L V8 Flex Fuel Vehicle
Exterior color:
Summit White
Fuel type:
Flex Fuel Vehicle
Interior color:
Jet Black, Leather-Appointed Front Seat Trim
Transmission:
Automatic
Mileage:
11,049
Stock number:
TJF181629
VIN:
1GT12TEG1JF181629

Preparing for a close up...

Photos coming soon

2017 GMC Sierra 2500HD

SLT Crew Cab SB 4WD

124,558 miles

$31,690

Fair Deal
Englewood, CO
66 mi away
Year:
2017
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
360 hp 6L V8 Flex Fuel Vehicle
Exterior color:
Summit White
Fuel type:
Flex Fuel Vehicle
Interior color:
Jet Black
Transmission:
6-Speed Automatic Overdrive
Mileage:
124,558
Stock number:
HF156534
VIN:
1GT12TEG5HF156534

Preparing for a close up...

Photos coming soon

2024 GMC Sierra 2500HD

SLT Crew Cab 4WD

20,375 miles

$65,791

Good Deal
Highlands Ranch, CO
70 mi away
Year:
2024
Make:
GMC
Model:
Sierra 2500HD
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, Perforated Leather-Appointed Front Outb
Transmission:
Automatic
Mileage:
20,375
Stock number:
TRF246115
VIN:
1GT49NEYXRF246115

Preparing for a close up...

Photos coming soon

2019 GMC Sierra 2500HD

SLT Crew Cab 4WD

109,289 miles

$39,980

Good Deal
Brighton, CO
42 mi away
Year:
2019
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
6.6L V8 Biodiesel
Exterior color:
White
Fuel type:
Biodiesel
Interior color:
Gray
Transmission:
6-Speed Automatic
Mileage:
109,289
Stock number:
T17650
VIN:
1GT12REY9KF251486

Preparing for a close up...

Photos coming soon

2024 GMC Sierra 2500HD

SLT Crew Cab 4WD

83,294 miles

$49,771

Great Deal
Greeley, CO
22 mi away
Year:
2024
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
401 hp 6.6L V8
Exterior color:
Summit White
Fuel type:
Gasoline
Interior color:
Jet Black
Transmission:
Automatic
Mileage:
83,294
Stock number:
RF128483U
VIN:
1GT49NE79RF128483

Preparing for a close up...

Photos coming soon

2012 GMC Sierra 2500HD

SLT Crew Cab SB 4WD

220,355 miles

$19,988

Fair Deal
Cheyenne, WY
41 mi away
Year:
2012
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
397 hp 6.6L V8 Diesel
Exterior color:
White
Fuel type:
Diesel
Interior color:
Black
Transmission:
6-Speed Automatic
Mileage:
220,355
Stock number:
W2026
VIN:
1GT121C88CF123892

Preparing for a close up...

Photos coming soon

2024 GMC Sierra 2500HD

SLT Crew Cab 4WD

24,333 miles

$69,000

Fair Deal
Lakewood, CO
59 mi away
Year:
2024
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
470 hp 6.6L V8 Biodiesel
Exterior color:
Red
Fuel type:
Biodiesel
Interior color:
Black
Transmission:
Automatic
Mileage:
24,333
Stock number:
LFOP251674A
VIN:
1GT49NEY4RF208492

Preparing for a close up...

Photos coming soon

2019 GMC Sierra 2500HD

SLT Crew Cab 4WD

109,289 miles

$39,980

Good Deal
Brighton, CO
42 mi away
Year:
2019
Make:
GMC
Model:
Sierra 2500HD
Body type:
Pickup Truck
Doors:
4 doors
Drivetrain:
Four-Wheel Drive
Engine:
6.6L V8 Biodiesel
Exterior color:
White
Fuel type:
Biodiesel
Interior color:
Gray
Transmission:
6-Speed Automatic
Mileage:
109,289
Stock number:
T17650
VIN:
1GT12REY9KF251486

Sponsored

  1. Home
  2. / Used Cars
  3. / GMC Sierra 2500HD
  4. / SLT
  5. / Colorado
  6. / Fort Collins
  • GMC Sierra 2500HD Denali in Fort Collins CO

  • GMC Sierra 2500HD SLT in Fort Collins CO

  • GMC Sierra 2500HD SLE in Fort Collins CO

  • GMC Sierra 2500HD Base in Fort Collins CO

  • GMC Sierra 2500HD Work Truck in Fort Collins CO

  • GMC Sierra 2500HD SLE1 in Fort Collins CO

  • GMC Sierra 2500HD SLE2 in Fort Collins CO

  • GMC Sierra 2500HD in Longmont CO

  • GMC Sierra 2500HD in Cheyenne WY

  • GMC Sierra 2500HD in Denver CO

  • GMC Sierra 2500HD in Laramie WY

  • GMC Sierra 2500HD in Castle Rock CO

  • GMC Sierra 2500HD in Colorado Springs CO

  • GMC Sierra 2500HD in Pueblo CO

  • GMC Sierra 2500HD in Casper WY

  • GMC Sierra 2500HD in Gunnison CO

  • GMC Sierra 2500HD in Fort Collins CO

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

  • Used GMC Electric Cars for Sale

  • Lifted GMC trucks for sale in Fort Collins CO

  • Work Trucks for Sale in Fort Collins CO

  • GM Certified Preowned Vehicles for Sale Near Fort Collins CO

  • 3/4 Ton Trucks for Sale in Fort Collins CO

  • 2019 GMC Sierra 2500HD SLT in Fort Collins CO

  • 2018 GMC Sierra 2500HD SLT in Fort Collins CO

  • 2017 GMC Sierra 2500HD SLT in Fort Collins CO

  • 2016 GMC Sierra 2500HD SLT in Fort Collins CO

  • 2015 GMC Sierra 2500HD SLT in Fort Collins CO

  • 2014 GMC Sierra 2500HD SLT in Fort Collins 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

  • Used SUVs / Crossovers for Sale with Low Mileage

  • Used Hatchbacks for Sale with Low Mileage

  • Used Convertibles for Sale with Low Mileage

  • Used Vans for Sale with Low Mileage

  • Used Minivans for Sale with Low Mileage

  • Used Pickup Trucks for Sale with Low Mileage

  • Used Coupes for Sale with Low Mileage

  • Used Wagons for Sale with Low Mileage

  • Johnson Auto Plaza

  • Mike Maroone Chevrolet Buick GMC Longmont

  • Mike Maroone Cadillac Buick GMC

  • Loveland Buick GMC

  • Markley Motors

  • Transwest GMC Isuzu

  • Halladay 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

© 2025 CarGurus, Inc., All Rights Reserved.