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134 listings
- $45,379good price$4,677 below market
- 104,850 miles
- 1 accident, 3 owners, personal use only
- 6'7” bed, 6.6l, 8cyl
- ClearShift Loveland (50 mi away)
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Located in Loveland, CO / 50 miles away from Denver, CO
The 2018 GMC Sierra 3500HD SLT is a heavy-duty truck that combines incredible power with premium comfort, making it perfect for both work and leisure....
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: 1GT42XCY9JF112798
Stock: 112798T
Certified Pre-Owned: No
Listed since: 02-19-2025 - $49,290good price$3,524 below market
- 69,991 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- O'Meara Ford (13 mi away)
Close
Located in Northglenn, CO / 13 miles away from Denver, CO
CARFAX One-Owner. Clean CARFAX. White Frost Tricoat 2018 GMC Sierra 3500HD Denali 4WD Allison 1000 6-Speed Automatic Duramax 6.6L V8 Turbodiesel Local...
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: 1GT42YEY4JF238103
Stock: MP6303A
Certified Pre-Owned: No
Listed since: 07-19-2025 - 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 - 78,649 miles
- No accidents, 2 owners, personal use only
- 8'2” bed, 6.6l, 8cyl
- United Automotive (3 mi away)
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Located in Denver, CO / 3 miles away from Denver, CO
• 6.6L Duramax Turbo Diesel • Allison Transmission • 4x4 • Dually • Crew Cab • Long Bed • Only 78k Miles • Cloth Seating • Backup Came...
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: 1GT42WCY6HF117140
Stock: 117140
Certified Pre-Owned: No
Listed since: 07-11-2025- New Listing
- 107,792 miles
- 2 accidents, 3 owners, personal use only
- 8'2” bed, 6.6l, 8cyl
- Berkenkotter Motors - Brighton (24 mi away)
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Located in Brighton, CO / 24 miles away from Denver, CO
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: 1GT42YEY2HF105642
Stock: T17156
Certified Pre-Owned: No
Listed since: 08-01-2025 - $44,988good price$3,541 below market
- 96,650 miles
- 1 accident, 2 owners, personal use only
- 6'7” bed, 6.6l, 8cyl
- Colorado Auto Finders (10 mi away)
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Located in Centennial, CO / 10 miles away from Denver, CO
The 2018 GMC Sierra is a powerful full-size pickup truck, designed to handle tough tasks while providing a comfortable and refined driving experience....
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: 1GT42YEY0JF283037
Stock: U15711
Certified Pre-Owned: No - $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)
Close
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$51,590fair price$1,316 above market
- 80,630 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Carvana (In-stock online)
- Home delivery*
Close
Located in Charlotte, NC / 1,357 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: 1GT42YEYXJF245542
Stock: 2003864142
Certified Pre-Owned: No
Listed since: 07-04-2025 - 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)
Close
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- New Listing$47,910great price$2,987 below market
- 97,028 miles
- No accidents, 3 owners, personal use
- 6'7” bed, 6.6l, 8cyl
- Alpine Buick GMC (9 mi away)
Close
Located in Littleton, CO / 9 miles away from Denver, CO
**WON'T LAST AT THIS PRICE, **ALL THE GOODIES, **LOCAL TRADE, Apple CarPlay/Android Auto, Driver Alert Package, Duramax Plus Package, Forward Collisio...
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: 1GT42WEY5KF133818
Stock: PKF133818
Certified Pre-Owned: No
Listed since: 06-12-2025 - $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)
Close
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 - Price Drop$49,999good price$2,406 below market
- 83,898 miles
- No accidents, 2 owners, personal use only
- 8'2” bed, 6.6l, 8cyl
- Laramie Auto Center (116 mi away)
Close
Located in Laramie, WY / 116 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: 1GT42WEY8KF233458
Stock: 11693A
Certified Pre-Owned: No
Listed since: 05-10-2025 - $50,999fair price$484 below market
- 89,430 miles
- No accidents, 3 owners, personal use only
- 8'2” bed, 6.6l, 8cyl
- Laramie Auto Center (116 mi away)
Close
Located in Laramie, WY / 116 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: 1GT42WEY8KF265424
Stock: 11755A
Certified Pre-Owned: No
Listed since: 06-07-2025 - $52,999fair price$652 below market
- 76,485 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Mountain Chevrolet (127 mi away)
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Located in Glenwood Springs, CO / 127 miles away from Denver, CO
This GMC won't be on the lot long! It comes equipped with all the standard amenities for your driving enjoyment. Turbocharger technology provides forc...
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: 1GT42WEY3KF161293
Stock: P1572
Certified Pre-Owned: No
Listed since: 07-12-2025 - 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*
Close
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 - 132,450 miles
- No accidents, 3 owners, personal use only
- 8'2” bed, 6.6l, 8cyl
- Kissner Motors (196 mi away)
Close
Located in Grand Junction, CO / 196 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: 1GT42WEY0KF146167
Stock: D0543
Certified Pre-Owned: No
Listed since: 01-04-2025- New Listing
- 65,566 miles
- 1 accident, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- CarMax (In-stock online)
- Transfer available from NM to CO*
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Located in Albuquerque, NM / 323 miles away from Denver, 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: 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: 1GT42WEY0KF181386
Stock: 27451055
Certified Pre-Owned: No - $51,495great price$4,210 below market
- 103,487 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Phil Long Ford Chapel Hills (52 mi away)
Close
Located in Colorado Springs, CO / 52 miles away from Denver, CO
The **2020 GMC Sierra 3500HD 4WD Crew Cab Standard Bed Denali** is an extraordinary heavy-duty truck that seamlessly combines luxury and performance. ...
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: 1GT49WEY6LF184337
Stock: 565020A
Certified Pre-Owned: No
Listed since: 06-17-2025 - 161,469 miles
- 1 accident, 2 owners, personal use
- 8'2” bed, 6.6l, 8cyl
- Auto Warehouse (64 mi away)
Close
Located in Fort Collins, CO / 64 miles away from Denver, CO
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: 1GD421C83FF513862
Stock: F10844
Certified Pre-Owned: No
Showing 1 - 21 out of 134 listings
Consumer Reviews for the GMC Sierra 3500HD
Read recent reviews for the GMC Sierra 3500HD
The designers and engineers should drive it more
Mike Langford, 01/16/2020
2017 GMC Sierra 3500HD Denali 4dr Crew Cab 4WD LB DRW (6.0L 8cyl 6A)
The Nav system is almost useless as far as address input,
The 4 wheel selector knob doesn't need to above the very similar headlight knob,
Why not put a DEF gauge in it?
When DEF warning triggers the DIC, no other information is available until the DEF tank is filled!
Entertainment system (CD, books on disk and downloaded library books) startup again when I approach the vehicle … (phone in my pocket) and the engine is running. I have lost my place in many books many times because of this.
The backup camera surely came from a Cracker Jacks box, substandard quality.
The center display will ruin your night vision when put in reverse (it could use a dimmer/off switch). And why not allow full time use of the back up camera and back up lighting? (I live and work on my farm).
Steering wheel buttons could be a little more intuitive, It's easy to turn on the steering wheel heater when the intent was to reduce the cruise speed.
My truck has the 6.6 Duramax (awsome!) and I drive about 10k miles/mo. Needless to say, I'm in it a lot.
Don't misunderstand, I love my truck but like I said in the beginning, the design and engineering people should have to drive their creations for a month or so.
How did someone devise the notion to put the DEF filler neck under the hood and on the passenger side firewall? A common problem and more future problems will occur as the caustic DEF fluid splashes out of the filler neck, it drains down on top of and puddles in the wiring harness on the bottom of the DEF tank where the wires go into the bottom of the tank. It's happened once and it damaged the DEF tank heater... thingie. Luckily it was under extended warranty.
And one thing Edmunds, I couldn't find the 6.6 Duramax option on your drop down menus. There all 6.0s
Used 2018 GMC Sierra 3500HD in Denver, CO Values
Estimated values
2018 GMC Sierra 3500HD SLT 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 6A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $35,788 | $38,251 | $40,277 |
| Clean | $34,800 | $37,183 | $39,140 |
| Average | $33,154 | $35,404 | $37,245 |
| Rough | $31,015 | $33,090 | $34,781 |
The average list price of a used 2018 GMC Sierra 3500HD in Denver, Colorado is $49,842. The average mileage on a used GMC Sierra 3500HD 2018 for sale in Denver, Colorado is 91,475. Based on the average mileage of 91,475 for used 2018 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 2018 in Denver, Colorado to be $33,154.
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