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777 listings
- Price Drop$43,995great price$10,337 below market
- 79,854 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- McGovern GMC (95 mi away)
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Located in Westborough, MA / 95 miles away from New Haven, CT
Recent Arrival! McGovern GMC is proud to present this...Onyx Black 2020 GMC Sierra 2500HD SLT 6.6L V8 6-Speed Automatic CARFAX One-Owner.Features In...
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: 1GT49NE70LF147933
Stock: GM11773A
Certified Pre-Owned: No
Listed since: 07-12-2025 - $52,995great price$6,682 below market
- 76,540 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- A Better Way Wholesale Autos (14 mi away)
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Located in Naugatuck, CT / 14 miles away from New Haven, CT
- Command the road with the powerful Duramax 6.6L Biodiesel Turbo V8 engine, delivering an impressive 445 horsepower and 910 lb-ft of torque. - Exper...
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: 1GT49PEY7LF213270
Stock: 213270N
Certified Pre-Owned: No - $46,974great price$5,609 below market
- 73,601 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Brustolon Buick GMC (51 mi away)
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Located in Mystic, CT / 51 miles away from New Haven, CT
Priced below KBB Fair Purchase Price! Clean CARFAX. Onyx Black 2020 GMC Sierra 2500HD AT4 4D Crew Cab 4WD 6-Speed Automatic 6.6L V8 Family owned and o...
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: 1GT49PE75LF105771
Stock: 6487P
Certified Pre-Owned: No
Listed since: 02-07-2025 - Price Drop$56,310great price$6,254 below market
- 49,994 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Chrysler Jeep Dodge Ram 24 (109 mi away)
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Located in Brockton, MA / 109 miles away from New Haven, CT
Service Records, Backup Camera, Bluetooth, Clean Carfax, Remote Start, 4X4, Blind Spot Warning, Heated Seats, Heated Steering Wheel, Lane Departure Wa...
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: 1GT19PEY9LF344591
Stock: TP7215
Certified Pre-Owned: No
Listed since: 07-09-2025 - Price Drop$55,860good price$4,576 below market
- 67,357 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Bob Weaver Chevrolet GMC (178 mi away)
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Located in Pottsville, PA / 178 miles away from New Haven, CT
New Tires, ***For Current Pricing Visit www.bobweaverauto.com***, 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather.Clean CARFAX.4WD 10...
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: 1GT49PEY3LF132654
Stock: G25577A
Certified Pre-Owned: No
Listed since: 06-10-2025 - New Listing$47,418great price$5,648 below market
- 99,112 miles
- 1 accident, 2 owners, personal use
- 6'10” bed, 6.6l, 8cyl
- Hurd Auto Mall (81 mi away)
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Located in Johnston, RI / 81 miles away from New Haven, CT
Recent Arrival! At Hurd Auto Mall, proudly part of the Balise Family, we have been honored to serve the Rhode Island community for over 85 years, offe...
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: 1GT49REY6LF161688
Stock: JG2719ZA
Certified Pre-Owned: No
Listed since: 07-25-2025 - $62,900great price$8,174 below market
- 15,870 miles
- No accidents, 1 owner, personal use
- 6'10” bed, 6.6l, 8cyl
- Decozen Chrysler Dodge Jeep Ram (76 mi away)
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Located in Verona, NJ / 76 miles away from New Haven, CT
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: 1GT49PEY0LF221310
Stock: 5873P
Certified Pre-Owned: No - $47,990good price$5,652 below market
- 52,413 miles
- 1 accident, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Riverhead Hyundai (30 mi away)
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Located in Riverhead, NY / 30 miles away from New Haven, CT
Quicksilver Metallic 2020 GMC Sierra 2500HD SLT 4WD 6-Speed Automatic 6.6L V8 6-Speed Automatic, 4WD, Jet Black Leather.Head East to pay the least! Re...
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: 1GT49NE7XLF149088
Stock: U22268
Certified Pre-Owned: No
Listed since: 07-19-2025 - $49,989good price$2,624 below market
- 96,073 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- McGee GMC of Charlton (74 mi away)
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Located in Charlton, MA / 74 miles away from New Haven, CT
2020 GMC Sierra 2500HD Carbon Black Metallic Denali 10-Speed Automatic, 4WD, Jet Black Leather. McGee GMC of Charlton thrives on helping people like y...
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: 1GT49REY7LF135410
Stock: MC1380A
Certified Pre-Owned: No
Listed since: 04-15-2025 - New Listing$62,995fair price$3,823 below market
- 36,095 miles
- 6'10” bed, 6.6l, 8cyl
- Star GMC Quakertown (141 mi away)
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Located in Quakertown, PA / 141 miles away from New Haven, CT
2020 GMC Sierra 2500HD Onyx Black AT4 4WD 10-Speed Automatic 4D Crew Cab Recent Arrival!Summer Sale-A-Thon! Star is kicking off the summer with some o...
AutoCheck Vehicle History Summary Unavailable.
Features and Specs:
Listing Information:
VIN: 1GT49PEY8LF271503
Stock: Q450344A
Certified Pre-Owned: No
Listed since: 07-28-2025 - Price Drop$49,995fair price$696 below market
- 81,575 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- D'Addario Nissan (9 mi away)
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Located in Shelton, CT / 9 miles away from New Haven, CT
2020 GMC Sierra 2500HD Denali 4WD 6-Speed Automatic 6.6L V8 6-Speed Automatic, 4WD, Jet Black Leather. Clean CARFAX. CARFAX One-Owner.
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: 1GT49RE74LF258363
Stock: G5254A
Certified Pre-Owned: No
Listed since: 04-25-2025 - Price Drop$42,987good price$650 below market
- 59,615 miles
- 2 accidents, 3 owners, personal use only
- 8'2” bed, 6.6l, 8cyl
- Banks Chevrolet Buick GMC (148 mi away)
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Located in Concord, NH / 148 miles away from New Haven, CT
2-Speaker Audio System Feature,4-Way Manual Driver Seat Adjuster,4-Way Manual Passenger Seat Adjuster,4G LTE Wi-Fi Hotspot Capable,5th Wheel & Goosene...
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: 1GT39LEY8LF222306
Stock: T22306
Certified Pre-Owned: Yes
Listed since: 06-06-2025 - New Listing$61,800fair price$254 below market
- 37,407 miles
- 6'10” bed, 6.6l, 8cyl
- Kelly Buick GMC (144 mi away)
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Located in Emmaus, PA / 144 miles away from New Haven, CT
2020 GMC Sierra 2500HD Denali 4WD Onyx BlackOur Risk Free story includes: 1) 3 day or 150 mile money back guarantee. 2) 30 day or 1500 mile replace...
AutoCheck Vehicle History Summary Unavailable.
Features and Specs:
Listing Information:
VIN: 1GT49REY3LF102677
Stock: BP6215
Certified Pre-Owned: No
Listed since: 07-29-2025 - 33,696 miles
- 1 accident, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- D'Addario Nissan (9 mi away)
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Located in Shelton, CT / 9 miles away from New Haven, CT
2020 GMC Sierra 2500HD 4WD 6-Speed Automatic 6.6L V8 6-Speed Automatic, 4WD, Black Cloth. CARFAX One-Owner. Awards: * JD Power Automotive Performance,...
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: 1GT39LE78LF275336
Stock: G5231A
Certified Pre-Owned: No
Listed since: 06-09-2025- $57,546fair price$327 above market
- 74,722 miles
- 2 accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- O'Neil GMC (136 mi away)
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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 - 50,892 miles
- No accidents, personal use only
- 6'10” bed, 6.6l, 8cyl
- Portsmouth Chevrolet (164 mi away)
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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- 62,928 miles
- No accidents, 2 owners, personal use
- 6'10” bed, 6.6l, 8cyl
- Habberstad BMW (41 mi away)
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Located in Huntington Station, NY / 41 miles away from New Haven, CT
This 2020 GMC Sierra 2500HD AT4, has a Onyx Black exterior and a Jet Black w/Kalahari Accents interior. Please call us at 855-785-7419 and refe...
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: 1GT49PEY5LF137001
Stock: F137001U
Certified Pre-Owned: No
Listed since: 07-10-2025- 80,251 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Alden GMC (108 mi away)
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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), SUNROOF...
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- New Listing
- 70,831 miles
- No accidents, 1 owner, personal use
- 6'10” bed, 6.6l, 8cyl
- Banks Chevrolet Buick GMC (148 mi away)
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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 - Price Drop$44,499great price$5,549 below market
- 85,895 miles
- 1 accident, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Tim's Truck Capital (154 mi away)
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Located in Epsom, NH / 154 miles away from New Haven, CT
6-Speed Automatic, 4WD, Jet Black Leather.Tim's Truck Capital is pumped up to offer this superb 2021 GMC Sierra 2500HD SLT X31 Off Road in Onyx Blac...
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: 1GT49NE75MF127159
Stock: MK2179
Certified Pre-Owned: No
Listed since: 03-24-2025 - Price Drop$55,500great price$5,592 below market
- 89,064 miles
- No accidents, 1 owner, personal use
- 6'10” bed, 6.6l, 8cyl
- Weirs GMC (190 mi away)
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Located in Arundel, ME / 190 miles away from New Haven, CT
10-Speed Automatic, 4WD, Jet Black Leather, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Ou...
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: 1GT49REY0MF196177
Stock: G25329A
Certified Pre-Owned: Yes
Listed since: 07-22-2025
Showing 1 - 21 out of 777 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 SLT 4dr Crew Cab 4WD SB (6.6L 8cyl 6A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $36,676 | $40,258 | $43,712 |
| Clean | $35,899 | $39,381 | $42,735 |
| Average | $34,604 | $37,920 | $41,106 |
| Rough | $32,920 | $36,021 | $38,989 |
The average list price of a used 2020 GMC Sierra 2500HD in New Haven, Connecticut is $52,111. The average mileage on a used GMC Sierra 2500HD 2020 for sale in New Haven, Connecticut is 65,418. Based on the average mileage of 65,418 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 $34,604.
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