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  • Price Drop
    • 73,218 miles
    • 1 accident, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Tim's Truck Capital (154 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Epsom, NH / 154 miles away from New Haven, CT

    6-Speed Automatic, 4WD, Jet Black Leather, ABS brakes, Alloy wheels, Compass, Electronic Stability Control, Front dual zone A/C, Heated & Ventilated 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: 1GT49RE76MF142910
    Stock: MK2199
    Certified Pre-Owned: No
    Listed since: 03-27-2025

  • Price Drop
    $66,995
    great price
    $7,577 below market
    • 20,001 miles
    • 1 accident, 1 owner, personal use
    • 6'10” bed, 6.6l, 8cyl
    • McGovern GMC (95 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Westborough, MA / 95 miles away from New Haven, CT

    McGovern GMC is proud to present this...Ebony Twilight Metallic 2022 GMC Sierra 2500HD Denali Duramax 6.6L V8 Turbodiesel 10-Speed Automatic CARFAX O...

    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: 1GT49REY4NF124111
    Stock: GM11547A
    Certified Pre-Owned: Yes
    Listed since: 05-16-2025

  • Stock photo**
    $61,950
    great price
    $5,836 below market
    • 19,360 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Weirs GMC (190 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Arundel, ME / 190 miles away from New Haven, CT

    Sierra 2500HD Denali, 4D Crew Cab, Duramax 6.6L V8 Turbodiesel, 10-Speed Automatic, 4WD, Dark Sky Metallic, Jet Black Leather, 12-Volt Rear Auxiliary ...

    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: 1GT49REYXLF295250
    Stock: G25248A
    Certified Pre-Owned: Yes
    Listed since: 05-30-2025

  • $50,998
    great price
    $8,958 below market
    • 60,947 miles
    • 2 accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Scott Family of Dealerships (143 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Allentown, PA / 143 miles away from New Haven, CT

    2020 GMC Sierra 2500HD LOCAL TRADE, FOUR-WHEEL-DRIVE, Sierra 2500HD SLT, 4D Crew Cab, Duramax 6.6L V8 Turbodiesel, 10-Speed Automatic, 4WD, Summit Whi...

    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: 1GT49NEY2LF117549
    Stock: C11678A
    Certified Pre-Owned: No
    Listed since: 04-07-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra HD Denali
    $46,300
    starting MSRP
    • 2 Trims
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $37,785
    great price
    $5,503 below market
    • 96,275 miles
    • 1 accident, 2 owners, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Fast Track Motors (69 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Paterson, NJ / 69 miles away from New Haven, CT

    2020 GMC SIERRA 2500!!!SLE!!! 6.6L DURAMAX TURBO DIESEL!!! ALLISON 10-SPEED TRANSMISSION!!! AUTO LOCKING REAR DIFF...2SPD ELECTRONIC TRANSFER CASE...2...

    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: 1GT49MEY0LF224402
    Stock: FT07712
    Certified Pre-Owned: No
    Listed since: 05-12-2025

  • Price Drop
    $45,650
    good price
    $5,072 below market
    • 70,427 miles
    • No accidents, 1 owner, personal use
    • 6'10” bed, 6.6l, 8cyl
    • McGee Chevrolet of Middlebury (187 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Middlebury, VT / 187 miles away from New Haven, CT

    McGee Chevrolet of Middlebury is proud to present you with another True Market Priced Pre-Owned Vehicle. This 2022 GMC Sierra 2500HD SLT is loaded wit...

    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: 1GT49NE75NF105521
    Stock: CP1270
    Certified Pre-Owned: No
    Listed since: 04-17-2025

  • Price Drop
    $58,987
    good price
    $4,116 below market
    • 48,950 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Banks Chevrolet Buick GMC (148 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    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,AM/F...

    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: 1GT49PE79NF163420
    Stock: T63420
    Certified Pre-Owned: Yes
    Listed since: 04-29-2025

  • $62,995
    good price
    $5,228 below market
    • 15,852 miles
    • No accidents, 1 owner, personal use
    • 6'10” bed, 6.6l, 8cyl
    • Mercedes-Benz of Caldwell (79 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in West Caldwell, NJ / 79 miles away from New Haven, CT

    Summit White 2020 GMC Sierra 2500HD AT4 4D Crew Cab 4WD Duramax 6.6L V8 Turbodiesel 8" Multicolor Driver Instrument Info Display, AT4 Preferred Packag...

    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: C250986A
    Certified Pre-Owned: No
    Listed since: 05-29-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra HD Denali
    $46,300
    starting MSRP
    • 2 Trims
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $52,995
    good price
    $4,086 below market
    • 76,540 miles
    • No accidents, 2 owners, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • A Better Way Wholesale Autos (13 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Naugatuck, CT / 13 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

  • $61,500
    good price
    $3,116 below market
    • 24,298 miles
    • 1 accident, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Colonial South Chevrolet (103 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in North Dartmouth, MA / 103 miles away from New Haven, CT

    : Highlights of this 2022 GMC Sierra 2500HD include: REDUCED FROM $61,500! CARFAX 1-Owner, GREAT MILES 24,298! Heated/Cooled Leather Seats, NAV, Sunro...

    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: 1GT49RE73NF210470
    Stock: 3644
    Certified Pre-Owned: No
    Listed since: 04-23-2025

  • $57,941
    good price
    $3,738 below market
    • 46,586 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Ingersoll Auto of Danbury (26 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Danbury, CT / 26 miles away from New Haven, CT

    CARFAX One-Owner. Sierra 2500HD AAT4, Duramax 6.6L V8 Turbodiesel, 4WD, 8' Multicolor Driver Instrument Info Display, AT4 Preferred Package, AT4 Premi...

    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: 1GT49PEY6LF165308
    Stock: T165308A
    Certified Pre-Owned: No
    Listed since: 05-20-2025

  • $57,811
    good price
    $3,892 below market
    • 49,182 miles
    • No accidents, 2 owners, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Ira Mazda (109 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Westwood, MA / 109 miles away from New Haven, CT

    Heated/Cooled Leather Seats, Navigation, Bed Liner, Heated Rear Seat, 4x4, Turbo Charged, Aluminum Wheels, ENGINE, DURAMAX 6.6L TURBO-DIESEL V8, B20-D...

    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: 1GT49REY1LF196283
    Stock: LF196283
    Certified Pre-Owned: No
    Listed since: 05-31-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra HD Denali
    $46,300
    starting MSRP
    • 2 Trims
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $59,974
    fair price
    $1,140 below market
    • 45,066 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Brustolon Buick GMC (51 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Mystic, CT / 51 miles away from New Haven, CT

    Priced below KBB Fair Purchase Price! Odometer is 24887 miles below market average! CARFAX One-Owner. Clean CARFAX. White Frost Tricoat 2020 GMC Sierr...

    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: 1GT49REY7LF344923
    Stock: 6630P
    Certified Pre-Owned: No
    Listed since: 04-20-2025

  • $58,446
    good price
    $3,353 below market
    • 32,233 miles
    • 1 accident, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Hurd Auto Mall (82 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Johnston, RI / 82 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: Yes

    Features and Specs:

    Listing Information:

    VIN: 1GT49REY8LF129180
    Stock: JG2711XA
    Certified Pre-Owned: No
    Listed since: 04-30-2025

  • $60,637
    good price
    $4,660 below market
    • 53,463 miles
    • 1 accident, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Star GMC Quakertown (140 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Quakertown, PA / 140 miles away from New Haven, CT

    GM CERTIFIED, CARFAX 1 OWNER, 8 Multicolor Driver Instrument Info Display, AT4 Preferred Package, AT4 Premium Package, Automatic Emergency Braking, Be...

    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: 1GT49PEY7LF297106
    Stock: Q450293B
    Certified Pre-Owned: Yes
    Listed since: 03-29-2025

  • Price Drop
    $55,000
    good price
    $3,056 below market
    • 36,539 miles
    • No accidents, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Ingersoll Auto of Danbury (26 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Danbury, CT / 26 miles away from New Haven, CT

    Clean CARFAX. Sierra 2500HD SLT, 6.6L V8, 4WD, 6' Rectangular Chromed Tubular Assist Steps, Automatic Emergency Braking, Driver Alert Package I, Drive...

    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: 1GT49NE71NF330129
    Stock: A330129
    Certified Pre-Owned: No
    Listed since: 04-04-2025

  • Advertisement

    Special offers available

    2025 GMC Sierra HD Denali
    $46,300
    starting MSRP
    • 2 Trims
    View Offers 
    *The Manufacturer’s Suggested Retail Price excludes destination freight charge, tax, title, license, dealer fees, and optional equipment. Dealer sets final price. Click here to see all GMC vehicles’ destination freight charges.
  • $49,989
    good price
    $2,847 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)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    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

  • $55,995
    good price
    $2,568 below market
    • 62,474 miles
    • No accidents, 2 owners, personal use
    • 6'10” bed, 6.6l, 8cyl
    • Romeo Ford (71 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Kingston, NY / 71 miles away from New Haven, CT

    Romeo Ford of Kingston proudly presents this 2020 GMC Sierra 2500HD with Denali Ultimate Package (Power Sunroof), Driver Alert Package I (Lane Change ...

    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: 1GT49REY8LF103436
    Stock: 25KM089A
    Certified Pre-Owned: No
    Listed since: 03-14-2025

  • Price Drop
    $40,273
    fair price
    $855 above market
    • 19,689 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • McGee Chevrolet of Middlebury (187 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Middlebury, VT / 187 miles away from New Haven, CT

    McGee Chevrolet of Middlebury is proud to present you with another True Market Priced Pre-Owned Vehicle. This 2020 GMC Sierra 2500HD is loaded with th...

    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: 1GT39LE7XLF238045
    Stock: CP1272
    Certified Pre-Owned: No
    Listed since: 04-23-2025

  • $67,900
    fair price
    $1,497 below market
    • 26,405 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Performance Buick GMC (85 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Cedar Knolls, NJ / 85 miles away from New Haven, CT

    10-Speed Automatic, 4WD, Jet Black w/Forge Perforated Leather-Appointed Front Seat Trim. Odometer is 19565 miles below market average! CARFAX One-Owne...

    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: 1GT49REY8NF119140
    Stock: B2202
    Certified Pre-Owned: No
    Listed since: 05-14-2025

  • Price Drop
    $39,187
    fair price
    $916 below market
    • 27,853 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Best Chevrolet (120 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Hingham, MA / 120 miles away from New Haven, CT

    Best Chevrolet is proud to present you with another True Market Priced Pre-Owned Vehicle. This 2022 GMC Sierra 2500HD Pro GMC Certified Pre-Owned is l...

    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: 1GT39LE75NF322809
    Stock: 15307PB
    Certified Pre-Owned: No
    Listed since: 04-14-2025

Showing 22 - 42 out of 822 listings

Consumer Reviews for the GMC Sierra 2500HD

Read recent reviews for the GMC Sierra 2500HD
Overall Consumer Rating
4.4 out of 5 stars24 Reviews
Write a vehicle reviewSee all 24 reviews
  • 5 star
    (75%)
  • 4 star
    (8%)
  • 3 star
    (4%)
  • 2 star
    (8%)
  • 1 star
    (4%)
4 out of 5 stars

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.
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Used 2021 GMC Sierra 2500HD in New Haven, CT Values

Estimated values
2021 GMC Sierra 2500HD Denali 4dr Crew Cab 4WD SB (6.6L 8cyl 6A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$48,415$52,115$55,834
Clean$47,528$51,109$54,702
Average$46,051$49,433$52,815
Rough$44,131$47,255$50,363

The average list price of a used 2021 GMC Sierra 2500HD in New Haven, Connecticut is $55,096. The average mileage on a used GMC Sierra 2500HD 2021 for sale in New Haven, Connecticut is 47,687. Based on the average mileage of 47,687 for used 2021 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 2021 in New Haven, Connecticut to be $46,051.

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