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306 listings
- Price Drop$64,697great price$10,009 below market
- 17,209 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Holman Honda (66 mi away)
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Located in Centennial, CO / 66 miles away from Fort Collins, CO
**DENALI ULTIMATE PKG**20" CHROME WHEEL PKG**POWER SUNROOF**2021 GMC Sierra 2500HD Denali Duramax 6.6L V8 Turbodiesel, Quicksilver Metallic, Jet Black...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REY3MF214574
Stock: MF214574
Certified Pre-Owned: No
Listed since: 04-30-2025 - Price Drop$58,402good price$3,907 below market
- 48,087 miles
- No accidents, personal use only
- 6'10” bed, 6.6l, 8cyl
- O'Meara GMC (45 mi away)
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Located in Denver, CO / 45 miles away from Fort Collins, CO
Experience the O’Meara Advantage. O’Meara offers a wide range of vehicles at competitive prices, and our knowledgeable staff is dedicated to helping c...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49RE7XMF307731
Stock: 7062GS
Certified Pre-Owned: No
Listed since: 04-22-2025 - $56,634fair price$1,081 below market
- 86,078 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Skyline Mitsubishi (45 mi away)
- Home delivery*
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Located in Thornton, CO / 45 miles away from Fort Collins, CO
Pacific Blue Metallic Denali 4WD ***At Skyline Mitsubishi we have financing for everyone. Call 303-465-5512.*****, "Dealer Handling charge is included...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REY6MF297305
Stock: 20542
Certified Pre-Owned: No
Listed since: 05-14-2025 - Price Drop$44,987fair price$704 below market
- 109,945 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Johnson Auto of Laramie (62 mi away)
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Located in Laramie, WY / 62 miles away from Fort Collins, CO
2021 GMC Sierra 2500HD AT4 Summit White 4WD 6.6L V8 6-Speed Automatic6-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, 10-Way Power Dri...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49PE73MF204980
Stock: 2259P
Certified Pre-Owned: No
Listed since: 02-21-2025 - New Listing
- 5,000 miles
- No accidents, personal use only
- 6'10” bed, 6.6l, 8cyl
- Castle Rock Chevrolet GMC (82 mi away)
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Located in Castle Rock, CO / 82 miles away from Fort Collins, CO
6-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather.2021 GMC Sierra 2500HD AT4 4WD 6-Speed Automatic 6.6L V8Recent Arrival! Odometer i...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49PE73MF228907
Stock: MF228907A
Certified Pre-Owned: No
Listed since: 05-30-2025 - Price Drop$67,699good price$3,967 below market
- 20,253 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- AutoNation Buick GMC West (56 mi away)
- Home delivery*
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Located in Golden, CO / 56 miles away from Fort Collins, CO
Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel CompatibleDenali Ultimate PackageTechnology PackageAssist Steps; Power-RetractableSunroof; Power...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REY1NF312701
Stock: NF312701
Certified Pre-Owned: No
Listed since: 04-22-2025 - Price Drop$62,599great price$4,849 below market
- 63,173 miles
- No accidents, 1 owner, personal use
- 6'10” bed, 6.6l, 8cyl
- Greenwood Automotive (70 mi away)
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Located in Parker, CO / 70 miles away from Fort Collins, CO
Greenwood Automotive is a local, family owned business in Parker, CO. 2022 GMC Sierra 2500HD Denali 4WD Odometer is 1102 miles below market average! 1...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REY7NF294415
Stock: TEH294415
Certified Pre-Owned: No
Listed since: 05-06-2025 - $53,799good price$4,205 below market
- 93,564 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- AutoNation Ford Arapahoe (65 mi away)
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Located in Centennial, CO / 65 miles away from Fort Collins, CO
Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel CompatibleLeather SeatsKeyless StartCooled Front Seat(S)This outstanding example of a 2020 GMC ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49PEY3LF140320
Stock: LF140320
Certified Pre-Owned: No
Listed since: 05-24-2025 - $57,685fair price$819 above market
- 71,980 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Audi Flatirons (41 mi away)
- Home delivery*
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Located in Broomfield, CO / 41 miles away from Fort Collins, CO
CARFAX 1-Owner, Clean CARFAX, Dealer Inspected, Freshly Detailed, 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, 12-Volt Rear Auxil...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49PEY0NF233461
Stock: NF233461
Certified Pre-Owned: No
Listed since: 04-29-2025 - New Listing$53,998fair price$804 below market
- 67,903 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- CarMax Parker (70 mi away)
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Located in Parker, CO / 70 miles away from Fort Collins, CO
CarMax values transparency and wants you to love your next car, not settle on it. Certain vehicles may have unrepaired safety recalls. Check nhtsa.gov...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49RE77LF120672
Stock: 26700513
Certified Pre-Owned: No - $56,991good price$1,862 below market
- 80,903 miles
- 1 accident, 2 owners, personal use
- 6'10” bed, 6.6l, 8cyl
- AutoNation Chrysler Jeep West (56 mi away)
- Home delivery*
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Located in Golden, CO / 56 miles away from Fort Collins, CO
Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel CompatibleDenali Ultimate PackageTechnology PackageSunroof; PowerSun/MoonroofGooseneck / 5Th Whe...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REY6NF139273
Stock: NF139273
Certified Pre-Owned: No
Listed since: 05-13-2025 - $47,995fair price$340 above market
- 145,019 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- United Automotive (56 mi away)
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Located in Denver, CO / 56 miles away from Fort Collins, CO
CARFAX ONE OWNER• DENALI • 6.6L Duramax Turbo Diesel • Allison Transmission • 4x4 • Crew Cab • Short Bed • Leather Loaded • Navigation ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REY0NF170972
Stock: 170972
Certified Pre-Owned: No
Listed since: 04-11-2025 - 32,364 miles
- No accidents, personal use only
- Sterling Auto Sales (80 mi away)
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Located in Franktown, CO / 80 miles away from Fort Collins, CO
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REY9NF177354
Stock: NF177354STK
Certified Pre-Owned: No
Listed since: 05-18-2025- New Listing
Photos not available- 73,493 miles
- 8'2” bed, 6.6l, 8cyl
- Johnson Auto Plaza (42 mi away)
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Located in Brighton, CO / 42 miles away from Fort Collins, CO
2022 GMC Sierra 2500HD Pro Summit White 4WD 6.6L V8 6-Speed Automatic6-Speed Automatic, 4WD, Black Cloth.Odometer is 5379 miles below market aver...
AutoCheck Vehicle History Summary Unavailable.
Features and Specs:
Listing Information:
VIN: 1GT59LE77NF271807
Stock: G516150A
Certified Pre-Owned: No
Listed since: 06-02-2025 - New Listing
- 66,078 miles
- 1 accident, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- AutoNation Acura Colorado Springs (119 mi away)
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Located in Colorado Springs, CO / 119 miles away from Fort Collins, CO
Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel CompatibleDenali Ultimate PackageTechnology PackageSunroof; PowerGooseneck / 5Th Wheel PackageSu...
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REYXLF320583
Stock: LF320583
Certified Pre-Owned: No
Listed since: 05-31-2025 - Price Drop$67,398good price$8,647 below market
- 28,340 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Transwest GMC (46 mi away)
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Located in Henderson, CO / 46 miles away from Fort Collins, CO
Clean Carfax, **ONE OWNER**, Non-Smoker, Local Trade, Remainder Of Factory Warranty, 4X4 / Four Wheel Drive, 10-Way Power Driver Seat Adjuster w/Lumba...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49PEY5PF169758
Stock: U16386
Certified Pre-Owned: No
Listed since: 05-16-2025 - Price Drop$68,951fair price$1,119 below market
- 23,931 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Driveway (In-stock online)
- Home delivery*
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Located in Temecula, CA / 822 miles away from Fort Collins, CO
CarFax No Accidents Reported,Low Mileage,Rare Find,Apple CarPlay,Back-Up Camera,Blind Spot Monitor,Bluetooth,Heads-Up Display,Heated Seats,Heated Stee...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REY9MF164280
Stock: MF164280P
Certified Pre-Owned: No - New Listing$55,990fair price$4,168 below market
- 50,212 miles
- No accidents, 2 owners, personal use
- 6'10” bed, 6.6l, 8cyl
- Carvana (In-stock online)
- Home delivery*
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Located in Boston, MA / 1,753 miles away from Fort Collins, CO
At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49PE70MF221557
Stock: 2003673034
Certified Pre-Owned: No
Listed since: 04-25-2025 - $51,962good price$4,563 below market
- 72,205 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Mike Maroone GMC (37 mi away)
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Located in Boulder, CO / 37 miles away from Fort Collins, CO
CARFAX One-Owner. Clean CARFAX.Recent Arrival! This one won't last long!, 10-Speed Automatic, 4WD, Jet Black Leather, 10-Way Power Driver Seat Adjuste...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49NEY2MF166686
Stock: G166686
Certified Pre-Owned: No
Listed since: 05-20-2025 - New Listing$35,999good price$2,962 below market
- 70,818 miles
- 1 accident, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Weld County Garage (18 mi away)
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Located in Greeley, CO / 18 miles away from Fort Collins, CO
more
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT19LE74MF107654
Stock: D1360
Certified Pre-Owned: No
Listed since: 05-31-2025 - New Listing$52,590fair price$648 below market
- 92,568 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Carvana (In-stock online)
- Home delivery*
Close
Located in Chicago, IL / 871 miles away from Fort Collins, CO
At Carvana, we go miles beyond the extra mile. That's why we provide you with a convenient, fast, and hassle-free car buying experience that puts you ...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: Yes
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49REY0MF318830
Stock: 2003634758
Certified Pre-Owned: No
Listed since: 04-29-2025
Showing 1 - 21 out of 306 listings
Consumer Reviews for the GMC Sierra 2500HD
Read recent reviews for the GMC Sierra 2500HD
Love the looks, love the power, love the economy
Rick B., 03/18/2021
2020 GMC Sierra 2500HD AT4 4dr Crew Cab 4WD SB (6.6L 8cyl 6A)
I purchased a 2020 Sierra 2500HD AT4 (Duramax) in November of 2020. This thing is a BEAST and a joy to drive. I've put almost 131K miles on it thus far and have not had a single issue. IMHO, the interior is better than a Ford but trails behind the Dodge. However, just because it seems less capable with technology isn't necessarily true. I have physical switches for many things that … the Dodge incorporates in their big screen. I MUCH prefer the switches because I don't have to go through electronic pages to find what I'm looking for. The seats are a bit hard but are very supportive. I'm averaging a 21mpg with it at this point but the majority (80%) of my driving is highway speeds. In an attempt see just how good of gas mileage I could get, I drove a cruise controlled speed of 55 mph on a VERY flat 2 lane road for a little over 75 miles. My results, 29.3mpg, yep, you read that right. As I get up to interstate cruising speed it's much closer to 22mpg. I have hauled my 6,000 pound boat a couple of times with it and it still gets around 14mpg. Speaking of hauling the boat, this thing tows like a dream. The cameras, mirrors and tow-haul mode work great and if I couldn't see the boat in my mirrors, I would hardly know it's there. The voice command menu and responsiveness is great, no issues with it and it has always recognized what I'm asking for. The Bose speakers produce more than I can listen to, and the cab is quiet enough for conference calls when I'm travelling for work. The in-cab outlet is perfect for charging my laptop on the go and allows my wife to use the computer when we travel without killing the battery. I put a hardcover on the bed but with the multipro tailgate I rarely have to do anything with it, and I make a LOT of trips to the lumber yard for 8'+ lumber. All I have to do is drop the upper portion of the tailgate and the long lumber slides right in and is safe and secure. One thing I would criticize. It doesn't match up when compared to the other makers off-roading capabilities (manual/push button locking differentials), but I didn't really buy it for that. If you want something to do some relatively challenging off-road cruising, look elsewhere. I could go on, but suffice it to say that I LOVE this truck and would absolutely recommend it without hesitation.
Used 2021 GMC Sierra 2500HD in Fort Collins, CO Values
Estimated values
2021 GMC Sierra 2500HD Denali 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $44,155 | $48,129 | $52,125 |
| Clean | $43,347 | $47,200 | $51,069 |
| Average | $42,000 | $45,653 | $49,307 |
| Rough | $40,248 | $43,641 | $47,017 |
The average list price of a used 2021 GMC Sierra 2500HD in Fort Collins, Colorado is $56,734. The average mileage on a used GMC Sierra 2500HD 2021 for sale in Fort Collins, Colorado is 62,815. Based on the average mileage of 62,815 for used 2021 GMC Sierra 2500HD for sale in Fort Collins, CO and using an average vehicle condition rating, which means the vehicle may have a few mechanical and/or cosmetic problems and may require a considerable amount of reconditioning, we appraise the average trade-in value of a used GMC Sierra 2500HD 2021 in Fort Collins, Colorado to be $42,000.
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* Delivery of any kind does not apply to Alaska and Hawaii. Contact the dealer for delivery details, restrictions and costs.