Skip to FiltersReport abuse
779 listings
- $57,546fair price$191 above market
- 74,722 miles
- 2 accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- O'Neil GMC (136 mi away)
Close
Located in Warminster, PA / 136 miles away from New Haven, CT
This 2020 GMC Sierra 2500HD Denali in Summit White features: Duramax 6.6L V8 Turbodiesel 10-Speed Automatic 4WDOur model lineup is second to none! ...
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: 1GT49REY8LF348818
Stock: G12656A
Certified Pre-Owned: No
Listed since: 05-07-2025 - New Listing$50,998fair price$1,235 above market
- 95,038 miles
- 6'10” bed, 6.6l, 8cyl
- CarMax Westborough (95 mi away)
Close
Located in Westborough, MA / 95 miles away from New Haven, CT
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 Unavailable.
Features and Specs:
Listing Information:
VIN: 1GT49REY2LF180903
Stock: 27584121
Certified Pre-Owned: No - 50,892 miles
- No accidents, personal use only
- 6'10” bed, 6.6l, 8cyl
- Portsmouth Chevrolet (164 mi away)
Close
Located in Portsmouth, NH / 164 miles away from New Haven, CT
*CLEAN CARFAX, *2020 GMC SIERRA 2500HD AT4, *ALL WHEEL DRIVE, *BLUETOOTH, *BACK UP CAMERA, *LEATHER, *APPLE CARPLAY/ANDROID AUTO, *LEATHER, *HEATED AN...
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: 1GT19PEY1LF235249
Stock: JJ10731
Certified Pre-Owned: No
Listed since: 06-20-2025- Price Drop
- 36,387 miles
- No accidents, 1 owner, personal use
- 6'10” bed, 6.6l, 8cyl
- Toyota of Nashua (124 mi away)
Close
Located in Nashua, NH / 124 miles away from New Haven, CT
Recent Arrival! Toyota of Nashua is proud to present this McGovern Certified... Onyx Black 2022 GMC Sierra 2500HD AT4 4WD Duramax 6.6L V8 Turbodiesel ...
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: 1GT19PEY9NF131014
Stock: GM3176XZX
Certified Pre-Owned: No
Listed since: 07-02-2025 - 34,622 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Colonial Ford (123 mi away)
Close
Located in Plymouth, MA / 123 miles away from New Haven, CT
Highlights of this 2022 GMC Sierra 2500HD include: LOW MILES - 34,622! NAV, Heated/Cooled Leather Seats, BED VIEW CAMERA, Satellite Radio, Alloy Wheel...
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: 1GT49PE77NF357167
Stock: R9999A
Certified Pre-Owned: No
Listed since: 06-27-2025- 80,251 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Alden GMC (108 mi away)
Close
Located in Fairhaven, MA / 108 miles away from New Haven, CT
This GMC Sierra 2500HD delivers a Gas V8 6.6L/ engine powering this Automatic transmission. TRANSMISSION, 6-SPEED AUTOMATIC, HEAVY-DUTY (STD), SUNROO...
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: 1GT49RE75LF115079
Stock: 115079T1
Certified Pre-Owned: No
Listed since: 07-18-2025- $63,254fair price$76 above market
- 38,471 miles
- 2 accidents, 1 owner, personal use
- 6'10” bed, 6.6l, 8cyl
- Davidson Chevrolet Cadillac Buick GMC of Rome (186 mi away)
Close
Located in Rome, NY / 186 miles away from New Haven, CT
REMOTE START, ONE OWNER, SERVICE RECORDS AVAILABLE, BLUETOOTH/HANDS FREE CELLPHONE, BACK UP CAMERA, REMAINDER OF FACTORY WARRANTY, FRESH OIL CHANGE, F...
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: 1GT49PEY8NF203351
Stock: R223561L
Certified Pre-Owned: No
Listed since: 07-10-2025 - Price Drop$55,000great price$11,384 below market
- 71,191 miles
- No accidents, 1 owner, personal use
- 6'10” bed, 6.6l, 8cyl
- Alden GMC (108 mi away)
Close
Located in Fairhaven, MA / 108 miles away from New Haven, CT
This GMC Sierra 2500HD delivers a Turbocharged Diesel V8 6.6L/ engine powering this Automatic transmission. WIRELESS CHARGING, WINTER GRILLE COVER, W...
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: 1GT49PEY4PF150179
Stock: 150179T1
Certified Pre-Owned: No
Listed since: 04-11-2025 - $62,562great price$13,393 below market
- 41,237 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Faulkner Buick GMC (135 mi away)
Close
Located in Trevose, PA / 135 miles away from New Haven, CT
2021 GMC Sierra 2500HD AT4 Pacific Blue Metallic GMC Certified Pre-Owned Certified, 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather, ...
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: 1GT49PEY9MF158497
Stock: MF158497
Certified Pre-Owned: Yes
Listed since: 06-09-2025 - 32,460 miles
- No accidents, 1 owner, personal use only
- Banks Chevrolet Buick GMC (148 mi away)
Close
Located in Concord, NH / 148 miles away from New Haven, CT
10-Speed Automatic, 4WD, Leather.CARFAX One-Owner. Clean CARFAX.2022 GMC Sierra 2500HD SLT SLT Duramax 6.6L V8 Turbodiesel 4WD
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: 1GT49NEY2NF331721
Stock: T31721
Certified Pre-Owned: No
Listed since: 07-11-2025- 49,417 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- D'Addario Nissan (9 mi away)
Close
Located in Shelton, CT / 9 miles away from New Haven, CT
Certified. 2022 GMC Sierra 2500HD SLT 4WD 6-Speed Automatic 6.6L V8 6-Speed Automatic, 4WD, Jet Black Leather. Clean CARFAX. CARFAX One-Owner. Odomete...
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: 1GT49NE75NF247805
Stock: G5303A
Certified Pre-Owned: No
Listed since: 05-21-2025- Price Drop$62,200great price$6,936 below market
- 23,931 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Driveway (In-stock online)
- Home delivery*
Close
Located in Temecula, CA / 2,456 miles away from New Haven, CT
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 - 63,369 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Hudson Cadillac Buick GMC (56 mi away)
Close
Located in Poughkeepsie, NY / 56 miles away from New Haven, CT
Moonroof, Heated/Cooled Leather Seats, Nav System, 4x4, Turbo Charged Engine, Aluminum Wheels, Bed Liner, Hitch, AUDIO SYSTEM, PREMIUM GMC INFOTAINMEN...
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: 1GT49REY2NF107128
Stock: 31679
Certified Pre-Owned: No
Listed since: 07-24-2025- New Listing
- 70,831 miles
- No accidents, 1 owner, personal use
- 6'10” bed, 6.6l, 8cyl
- Banks Chevrolet Buick GMC (148 mi away)
Close
Located in Concord, NH / 148 miles away from New Haven, CT
6-Speed Automatic, 4WD, Dark Walnut/Dark Ash Grey Leather.CARFAX One-Owner. Clean CARFAX.2020 GMC Sierra 2500HD Denali Denali 6.6L V8 4WD
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: 1GT49RE70LF106970
Stock: T06970
Certified Pre-Owned: No
Listed since: 07-25-2025 - $55,991great price$9,275 below market
- 70,981 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Betley Chevrolet (137 mi away)
Close
Located in Derry, NH / 137 miles away from New Haven, CT
This 2021 GMC Sierra 2500HD AT4 Crew Cab 4x4 is a powerful and reliable vehicle. With a 6.6 liter 8 cylinder engine and 71,588 miles, it has plenty of...
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: 1GT49PEY2MF173522
Stock: T25-266A
Certified Pre-Owned: No
Listed since: 04-19-2025 - New ListingNot Priced
- 155,363 miles
- 2 accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- GMC Bedford Hills (41 mi away)
Close
Located in Bedford Hills, NY / 41 miles away from New Haven, CT
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: 1GT49RE7XNF142913
Stock: T30114A
Certified Pre-Owned: No
Listed since: 07-24-2025 - $51,494great price$4,949 below market
- 103,091 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Mercedes-Benz of North Haven (8 mi away)
Close
Located in North Haven, CT / 8 miles away from New Haven, CT
Clean CARFAX.Denali Ultimate Package, Inside Rearview Auto-Dimming Rear Camera Mirror, Multicolor 15" Diagonal Head-Up Display, Power Sunroof, Technol...
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: 1GT49REY3MF109503
Stock: 18127MK1
Certified Pre-Owned: No
Listed since: 04-27-2025 - New ListingNot Priced
- 82,556 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Bensons Chevrolet (144 mi away)
Close
Located in Ludlow, VT / 144 miles away from New Haven, CT
Recent Arrival! 2022 GMC Sierra 2500HD AT4 Cayenne Red Tintcoat6.6L V8 4WD 6-Speed AutomaticClean CARFAX.6-Speed Automatic, 4WD, Jet Black With ...
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: 1GT49PE74NF289913
Stock: 2232
Certified Pre-Owned: No
Listed since: 07-30-2025 - Price Drop$61,987great price$5,419 below market
- 50,225 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Banks Chevrolet Buick GMC (148 mi away)
Close
Located in Concord, NH / 148 miles away from New Haven, CT
10-Way Power Driver Seat Adjuster w/Lumbar,10-Way Power Passenger Seat Adjuster w/Lumbar,2 USB Ports (1st Row),2nd Row Dual USB Charge-Only Ports,Appl...
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: 1GT49REY5PF169352
Stock: T69352A
Certified Pre-Owned: Yes
Listed since: 04-28-2025 - New Listing
- 39,086 miles
- 6'10” bed, 6.6l, 8cyl
- Banks Chevrolet Buick GMC (148 mi away)
Close
Located in Concord, NH / 148 miles away from New Haven, CT
10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather.2020 GMC Sierra 2500HD AT4 AT4 Duramax 6.6L V8 Turbodiesel 4WD
AutoCheck Vehicle History Summary Unavailable.
Features and Specs:
Listing Information:
VIN: 1GT49PEY4LF262443
Stock: T62443A
Certified Pre-Owned: No
Listed since: 07-28-2025 - New Listing$59,590good price$5,206 below market
- 53,772 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Carvana (In-stock online)
- Home delivery*
Close
Located in Columbus, OH / 536 miles away from New Haven, CT
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: 1GT49REY2MF301219
Stock: 2003799744
Certified Pre-Owned: No
Listed since: 06-10-2025
Showing 43 - 63 out of 779 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 2020 GMC Sierra 2500HD in New Haven, CT Values
Estimated values
2020 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 | $44,102 | $47,394 | $50,571 |
| Clean | $43,167 | $46,363 | $49,441 |
| Average | $41,610 | $44,643 | $47,556 |
| Rough | $39,585 | $42,407 | $45,107 |
The average list price of a used 2020 GMC Sierra 2500HD in New Haven, Connecticut is $57,818. The average mileage on a used GMC Sierra 2500HD 2020 for sale in New Haven, Connecticut is 62,757. Based on the average mileage of 62,757 for used 2020 GMC Sierra 2500HD for sale in New Haven, CT 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 2020 in New Haven, Connecticut to be $41,610.
Filters
Skip to ResultsApplied Filters4Active
Make & Model
Year
New / Used
Price & Payments
Price Rating
Trim
Truck Details
Mileage
Accidents & History
Engine & Drivetrain
Exterior Color
Interior Color
Total Seating
Edmunds Review
Features
Options & Packages
* Delivery of any kind does not apply to Alaska and Hawaii. Contact the dealer for delivery details, restrictions and costs.