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134 listings
- $55,999good price$5,296 below market
- 71,448 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Interstate Ford (27 mi away)
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Located in Dacono, CO / 27 miles away from Denver, CO
6.6L DURAMAX V8, TRAILER TOW, 5TH WHEEL HITCH KIT, NAVIGATION SYSTEM, HEATED/COOLED LEATHER-TRIMMED SEATS W/10-WAY POWER DRIVER/PASSENGER & DRIVER MEM...
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: 1GT49UEY6MF192511
Stock: D82892B
Certified Pre-Owned: No
Listed since: 07-24-2025 - $51,995good price$2,752 below market
- 90,454 miles
- No accidents, 1 owner, corporate fleet vehicle
- 6'10” bed, 6.6l, 8cyl
- ClearShift (9 mi away)
Close
Located in Highlands Ranch, CO / 9 miles away from Denver, CO
Powerful and luxurious, this 2021 GMC Sierra 3500HD Denali 4WD is equipped with the renowned 6.6L Duramax V8 Turbodiesel paired with a 10-speed Alliso...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
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: 1GT49WEY9MF280822
Stock: JV280822
Certified Pre-Owned: No
Listed since: 08-15-2024 - New Listing$49,000fair price$2,865 above market
- 162,490 miles
- 6'10” bed, 6.6l, 8cyl
- Larry H. Miller Ford Lakewood (8 mi away)
- Home delivery*
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Located in Lakewood, CO / 8 miles away from Denver, CO
Black 2021 GMC Sierra 3500HD AT4 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Leather.Why buy from Larry H Miller Ford ...
AutoCheck Vehicle History Summary Unavailable.
Features and Specs:
Listing Information:
VIN: 1GT49VEY3MF115228
Stock: LFO250587A
Certified Pre-Owned: No
Listed since: 08-02-2025 - $53,476good price$2,391 below market
- 53,742 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Pueblo Toyota (97 mi away)
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Located in Pueblo, CO / 97 miles away from Denver, 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: 1GT49UEY8LF171304
Stock: 258248B
Certified Pre-Owned: No
Listed since: 07-14-2025 - Price Drop
- 55,788 miles
- No accidents, 2 owners, personal use only
- 8'2” bed, 6.6l, 8cyl
- AutoNation Chevrolet North (10 mi away)
- Home delivery*
Close
Located in Denver, CO / 10 miles away from Denver, CO
Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel CompatibleDenali Black Diamond EditionDenali Ultimate PackageTechnology PackageAssist Steps; Powe...
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: 1GT49WEY2NF248862
Stock: NF248862
Certified Pre-Owned: No
Listed since: 07-24-2025 - New Listing
- 16,965 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Modern Classic Motors (197 mi away)
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Located in Grand Junction, CO / 197 miles away from Denver, CO
2020 GMC Sierra 3500HD Denali 10-Speed Automatic, 4WD, Jet Black Leather. 4WD 10-Speed Automatic Duramax 6.6L V8 TurbodieselKBB Fair Market Range Hig...
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: 1GT49WEY5LF267757
Stock: 256VA
Certified Pre-Owned: No
Listed since: 08-02-2025 - 120,105 miles
- Frame damage reported, 2 owners, corporate fleet vehicle
- 8'2” bed, 6.6l, 8cyl
- Lakeside Auto Brokers (61 mi away)
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Located in Colorado Springs, CO / 61 miles away from Denver, CO
Carbon Black Metallic 2020 GMC Sierra 3500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Leather.La...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Issue reported
Salvage Vehicle: No
Frame Damage: Yes
Theft History: No
Lemon Status: No
Free History Report: No
Features and Specs:
Listing Information:
VIN: 1GT49WEY0LF274986
Stock: P16465
Certified Pre-Owned: No
Listed since: 06-04-2024- 90,154 miles
- No accidents, 3 owners, personal use only
- 8'2” bed, 6.6l, 8cyl
- Modern Classic Motors (197 mi away)
Close
Located in Grand Junction, CO / 197 miles away from Denver, CO
2022 GMC Sierra 3500HD AT4 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather. 4WD 10-Speed Automatic Duramax 6.6L V8 TurbodieselKBB Fa...
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: Yes
Features and Specs:
Listing Information:
VIN: 1GT49VEY5NF181992
Stock: 29857
Certified Pre-Owned: No
Listed since: 05-06-2025- New Listing
- 101,544 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Modern Classic Motors (197 mi away)
Close
Located in Grand Junction, CO / 197 miles away from Denver, CO
2022 GMC Sierra 3500HD AT4 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather. 4WD 10-Speed Automatic Duramax 6.6L V8 TurbodieselPriced...
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: 1GT49VEY5NF129116
Stock: 30058
Certified Pre-Owned: No
Listed since: 07-30-2025 - Price Drop$54,699good price$2,882 below market
- 57,405 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 6.6l, 8cyl
- Larry H. Miller Ford Lakewood (8 mi away)
- Home delivery*
Close
Located in Lakewood, CO / 8 miles away from Denver, CO
Dark Slate Metallic 2019 GMC Sierra 3500HD Denali 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel, NAVIGATION, DURAMAX PLUS PKG, OFF RO...
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: 1GT42WEY9KF256490
Stock: LFO250727A
Certified Pre-Owned: No
Listed since: 06-27-2025 - $54,989fair price$356 below market
- 89,847 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- ClearShift (9 mi away)
Close
Located in Highlands Ranch, CO / 9 miles away from Denver, CO
The 2023 GMC Sierra 3500HD AT4 4WD in Pacific Blue Metallic is a heavy-duty, off-road-capable truck powered by the renowned 6.6L Duramax V8 Turbodiese...
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: 1GT49VEY6PF117771
Stock: KM117771
Certified Pre-Owned: No
Listed since: 07-09-2025 - $67,990fair price$985 below market
- 36,111 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- AutoNation Chrysler Jeep West (11 mi away)
- Home delivery*
Close
Located in Golden, CO / 11 miles away from Denver, CO
Engine; Duramax 6.6L Turbo-Diesel V8; B20-Diesel CompatibleAssist Steps; Power-RetractableSunroof; PowerSun/MoonroofGooseneck / 5Th Wheel Prep Pac...
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: 1GT49WEYXPF162122
Stock: PF162122
Certified Pre-Owned: No
Listed since: 07-26-2025 - Price Drop$48,000good price$853 below market
- 64,798 miles
- 1 accident, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Larry H. Miller Ford Lakewood (8 mi away)
- Home delivery*
Close
Located in Lakewood, CO / 8 miles away from Denver, CO
Summit White 2023 GMC Sierra 3500HD Pro 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel. POWER EQUIPMENT GROUP, TRAILER TOW MIRRORS, REAR CAMERA, T...
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: Yes
Features and Specs:
Listing Information:
VIN: 1GT49SEY1PF179061
Stock: LFO241644B
Certified Pre-Owned: No
Listed since: 07-03-2025 - Price Drop$47,384fair price$368 above market
- 77,510 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Ken Garff Ford Greeley (50 mi away)
Close
Located in Greeley, CO / 50 miles away from Denver, CO
Ford Blue Advantage Blue Certified, 10-Speed Automatic, 4WD, Black Cloth, 2-Speed Electronic Shift Transfer Case, 220 Amp Alternator, 3 Years of OnSta...
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: 1GT49SEY7PF203881
Stock: PF203881P
Certified Pre-Owned: No
Listed since: 06-11-2025 - $55,010fair price$78 above market
- 96,310 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Alpine Buick GMC South (61 mi away)
Close
Located in Colorado Springs, CO / 61 miles away from Denver, CO
Recent Arrival!**NO ACCIDENTS REPORTED ON CARFAX, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Po...
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: 1GT49WEY4MF112991
Stock: SF277631A
Certified Pre-Owned: No
Listed since: 07-19-2025 - New Listing
- 41,098 miles
- No accidents, 1 owner, personal use only
- Carvana (In-stock online)
- Home delivery*
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Located in Kansas City, MO / 557 miles away from Denver, 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: 1GT49WEY2MF133354
Stock: 2003649534
Certified Pre-Owned: No
Listed since: 04-22-2025 - Price Drop
- 42,087 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Driveway (In-stock online)
- Home delivery*
Close
Located in Roseburg, OR / 973 miles away from Denver, CO
CarFax No Accidents Reported,Rare Find,Apple CarPlay,Back-Up Camera,Heated Seats,Heated Steering Wheel,Leather Seats,Remote Start,Satellite Radio,Tow ...
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: 1GT49UEY1MF259659
Stock: 1921A
Certified Pre-Owned: No - New Listing
- 86,539 miles
- No accidents, 2 owners, corporate fleet vehicle
- 6'10” bed, 6.6l, 8cyl
- Driveway (In-stock online)
- Home delivery*
Close
Located in Billings, MT / 459 miles away from Denver, CO
CarFax No Accidents Reported,Rare Find,Apple CarPlay,Back-Up Camera,Blind Spot Monitor,Bluetooth,Heated Seats,Heated Steering Wheel,Keyless Start,Leat...
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
History Provider: AutoCheck
Title Details: Clean Title
Salvage Vehicle: No
Frame Damage: No
Theft History: No
Lemon Status: No
Free History Report: Yes
Features and Specs:
Listing Information:
VIN: 1GT49WEY6MF106397
Stock: 23255
Certified Pre-Owned: No - 126,849 miles
- 2 accidents, 1 owner, personal use only
- Markley Buick GMC (59 mi away)
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Located in Fort Collins, CO / 59 miles away from Denver, CO
Diesel powered, our 2021 GMC Sierra 3500 Denali Crew Cab 4X4 is where flagship luxury meets fierce strength in White Frost Tricoat with the Denali Ult...
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: 1GT49WEY0MF254674
Stock: 254674
Certified Pre-Owned: No
Listed since: 07-12-2025
Photos not available- 75,736 miles
- No accidents, 1 owner, personal use
- Fresh Rides (50 mi away)
Close
Located in Evans, CO / 50 miles away from Denver, CO
Fresh Rides Inc. Megan Burris, Abigail Peitz, Kyle Dickens, Lee Hagler 3919 State St. Evans, CO 80*** 9**-3**-6261 Get ready to level up your driving ...
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: 1GT49WEYXMF258571
Stock: 7950
Certified Pre-Owned: No
Listed since: 07-20-2025- 87,721 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Perkins Chevrolet GMC (141 mi away)
Close
Located in La Junta, CO / 141 miles away from Denver, CO
Final Price includes $599 D&H Fee. All prices, specifications and availability subject to change without notice. Contact dealer for most current infor...
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: 1GT49TEY0MF283817
Stock: C4238A
Certified Pre-Owned: No
Listed since: 07-25-2025
Showing 1 - 21 out of 134 listings
Consumer Reviews for the GMC Sierra 3500HD
Read recent reviews for the GMC Sierra 3500HD
WHAT A TRUCK
Bill S., 04/05/2020
2020 GMC Sierra 3500HD Denali 4dr Crew Cab 4WD SB (6.6L 8cyl 6A)
I purchased this Denali two weeks ago. I absolutely love this truck. The ride is so smooth and power band is incredible. What a huge difference between my 2008 GMC 2500HD Duramax, its like night and day... I love all the high tech features with the 2020's from the cameras to the front and rear LED lighting. Oh yea forgot about that first of its kind tailgate. Now that's a very … useful tailgate, I can see Ford, Dodge and Chevrolet using the same basic tailgate in the near future.
I really cant wait to haul my 5th wheel with this truck. Once I make that first trip I will update this review regarding the towing...
A big thank you for Thompsons GMC in Placerville, CA for such a great purchasing experience.
It’s been about a year since I purchased my GMC 3500 Denali and wanted to update my review.
I still love this truck so much. I’ve towed my 5th wheel RV approximately 8000K miles. This truck tows my 5th wheel like a dream. The cooling system is definitely a 100% improvement over my 2008 while towing in the warmer weather.
About the only thing I’d like to see is GM add more information to the heads up display (HUD) like your blind spot indicators.
I’m glad we bought when we did because I hear that dealers are having a tough time receiving new trucks.
Bottom line is this, I’d buy this truck all over again absolutely No Regrets!!!!
Used 2021 GMC Sierra 3500HD in Denver, CO Values
Estimated values
2021 GMC Sierra 3500HD SLT 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $38,567 | $42,720 | $46,895 |
| Clean | $37,862 | $41,896 | $45,945 |
| Average | $36,685 | $40,522 | $44,360 |
| Rough | $35,155 | $38,737 | $42,300 |
The average list price of a used 2021 GMC Sierra 3500HD in Denver, Colorado is $55,382. The average mileage on a used GMC Sierra 3500HD 2021 for sale in Denver, Colorado is 78,319. Based on the average mileage of 78,319 for used 2021 GMC Sierra 3500HD for sale in Denver, 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 3500HD 2021 in Denver, Colorado to be $36,685.
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