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    • 102,952 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
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

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

    CLEAN CARFAX/NO ACCIDENTS REPORTED, ONE OWNER, RECENT TRADE, Sierra 3500HD SLE, 4D Crew Cab, 6.6L V8, 6-Speed Automatic, 4WD, Summit White, Black Clot...

    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: 1GT49TE74MF126928
    Stock: G24042A
    Certified Pre-Owned: Yes
    Listed since: 03-24-2025

  • Stock photo**
    • 152,217 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Sands Chrysler Jeep Dodge Ram (141 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Quakertown, PA / 141 miles away from New Haven, CT

    2021 GMC Sierra 3500HDSANDS MARKET BASED PRICING, 6-Speed Automatic, 4WD, Jet Black Vinyl.Too new for photos!SANDS Chrysler Jeep Dodge Ram Quake...

    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: 1GT49SE74MF244634
    Stock: AD24098
    Certified Pre-Owned: No
    Listed since: 06-26-2025

  • $53,900
    fair price
    $3,540 below market
    • 22,994 miles
    • No accidents, 1 owner, personal use
    • 6'10” bed, 6.6l, 8cyl
    • Hudson Cadillac Buick GMC (56 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Poughkeepsie, NY / 56 miles away from New Haven, CT

    WiFi Hotspot, Onboard Communications System, Aluminum Wheels, Hitch, GOOSENECK / 5TH WHEEL PREP PACKAGE, TRANSMISSION, 6-SPEED AUTOMATIC, HEAV... SLE ...

    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: 1GT49TE76NF283538
    Stock: 31633
    Certified Pre-Owned: No
    Listed since: 06-20-2025

  • Price Drop
    $52,987
    good price
    $3,210 below market
    • 99,210 miles
    • No accidents, 2 owners, personal use
    • 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 (First Row),2 USB Ports Inside Console,2nd Row Du...

    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: 1GT49WEY5LF151359
    Stock: T51359
    Certified Pre-Owned: No
    Listed since: 05-14-2025

  • Price Drop
    $54,987
    fair price
    $65 below market
    • 85,351 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Banks Chevrolet Buick GMC (148 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    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 (First Row),2 USB Ports Inside Console,2nd Row Du...

    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: 1GT49WE76NF179892
    Stock: T79892
    Certified Pre-Owned: No
    Listed since: 06-14-2025

  • $38,892
    fair price
    $689 below market
    • 40,912 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Colonial South Chevrolet (103 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

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

    Highlights of this 2022 GMC Sierra 3500HD include: CARFAX 1-Owner, ONLY 40,912 Miles! JUST REPRICED FROM $42,212, $2,500 below J.D. Power Retail! Runn...

    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: 1GT39SE70NF305166
    Stock: 3609
    Certified Pre-Owned: No
    Listed since: 03-24-2025

  • $41,900
    good price
    $1,495 below market
    • 73,812 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • McGovern Ford of Lowell (121 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Lowell, MA / 121 miles away from New Haven, CT

    McGovern Ford at Drum Hill is proud to present this McGovern Certified...Pacific Blue Metallic 2022 GMC Sierra 3500HD Regular Cab Pro 4WD Duramax 6.6L...

    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: 1GT39SEY3NF263326
    Stock: FN6111A
    Certified Pre-Owned: No
    Listed since: 03-03-2025

    • 12,563 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
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

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

    ONE OWNER, Sierra 3500HD SLE, 4D Crew Cab, 6.6L V8, 6-Speed Automatic, 4WD, Cardinal Red, Black Cloth, 220 Amp Alternator, Hill Descent Control, Off-R...

    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: 1GT49TE74NF338553
    Stock: P25059
    Certified Pre-Owned: Yes
    Listed since: 06-18-2025

  • Stock photo**
    $58,744
    good price
    $1,977 below market
    • 65,609 miles
    • No accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Hyundai of Trenton (121 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    Close

    Located in Ewing, NJ / 121 miles away from New Haven, CT

    Onyx Black 2020 GMC Sierra 3500HD Denali 4WD 10-Speed Automatic Duramax 6.6L V8 Turbodiesel 10-Speed Automatic, 4WD, Jet Black Leather.Odometer is 1...

    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: 1GT49WEY3LF305227
    Stock: 305227T01
    Certified Pre-Owned: No
    Listed since: 07-10-2025

  • New Listing
    Stock photo**
    $43,987
    good price
    $1,288 below market
    • 15,142 miles
    • 8'2” bed, 6.6l, 8cyl
    • Banks Chevrolet Buick GMC (148 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Concord, NH / 148 miles away from New Haven, CT

    6-Speed Automatic, 4WD, Black Cloth.2022 GMC Sierra 3500HD Pro Pro 6.6L V8 4WD

    AutoCheck Vehicle History Summary Unavailable.

    Features and Specs:

    Listing Information:

    VIN: 1GT39SE75NF306121
    Stock: T06121
    Certified Pre-Owned: No
    Listed since: 07-26-2025

  • New Listing
    Stock photo**
    $44,900
    fair price
    $630 below market
    • 48,472 miles
    • No accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • McGovern Hyundai (109 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

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

    Recent Arrival! Onyx Black 2022 GMC Sierra 3500HD SLE 6-Speed Automatic 4WD Clean CARFAX.Features Include:, MCGOVERN CERTIFIED, 4WD / Four Wheel 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: 1GT39TE71NF322788
    Stock: HY3410
    Certified Pre-Owned: No
    Listed since: 07-28-2025

  • $44,999
    fair price
    $897 above market
    • 37,728 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Tim's Truck Capital (154 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

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

    6-Speed Automatic, 4WD, Black Cloth, ABS brakes, Compass, Electronic Stability Control, Heated door mirrors, Illuminated entry, Integrated Trailer Bra...

    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: 1GT39TE79NF161803
    Stock: JM1480
    Certified Pre-Owned: No
    Listed since: 05-03-2025

  • New Listing
    $45,999
    fair price
    $2,069 above market
    • 138,728 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Key GMC of Rochester (170 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Rochester, NH / 170 miles away from New Haven, CT

    10-Speed Automatic, 4WD, Jet Black Leather.Thank you for shopping with Key GMC of Rochester, part of the Key Auto Group Family of Dealerships and ho...

    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: 1GT49UEY2NF216918
    Stock: G21805A
    Certified Pre-Owned: No
    Listed since: 07-10-2025

    • 22,510 miles
    • No accidents, 3 owners, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • O'Neil GMC (136 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Warminster, PA / 136 miles away from New Haven, CT

    Priced below KBB Fair Purchase Price! This 2022 GMC Sierra 3500HD AT4 in Pacific Blue Metallic features: 6.6L V8 6-Speed Automatic 4WD Certified.GMC ...

    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: 1GT49VE70NF172446
    Stock: G915A
    Certified Pre-Owned: Yes
    Listed since: 05-24-2024

    • 75,113 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • Hudson Cadillac Buick GMC (56 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Poughkeepsie, NY / 56 miles away from New Haven, CT

    Satellite Radio, Running Boards, Back-Up Camera, Cooled Driver Seat, 4x4, SLE CONVENIENCE PACKAGE, Hitch, TRANSMISSION, 6-SPEED AUTOMATIC, HEAV... ENG...

    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: 1GT49TE73NF190900
    Stock: 31655
    Certified Pre-Owned: No
    Listed since: 07-07-2025

    • 49,248 miles
    • No accidents, 1 owner, personal use only
    • 6'10” bed, 6.6l, 8cyl
    • O'Neil GMC (136 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Leather Seats
    • Keyless Entry/Start
    Close

    Located in Warminster, PA / 136 miles away from New Haven, CT

    This 2022 GMC Sierra 3500HD AT4 in Ebony Twilight Metallic features: 6.6L V8 6-Speed Automatic 4WD CARFAX One-Owner. Clean CARFAX. Certified.GMC Cert...

    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: 1GT49VE78NF159217
    Stock: G12671A
    Certified Pre-Owned: Yes
    Listed since: 05-17-2025

    • 41,706 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Star GMC Quakertown (141 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Upgraded Headlights
    • Tire Pressure Warnin...
    Close

    Located in Quakertown, PA / 141 miles away from New Haven, CT

    2020 GMC Sierra 3500HD Summit White 4WD 6-Speed Automatic 4D Crew CabSummer Sale-A-Thon! Star is kicking off the summer with some of the best deals on...

    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: 1GT49SE75LF343123
    Stock: Q25366A
    Certified Pre-Owned: No
    Listed since: 05-24-2025

  • Price Drop
    $51,487
    great price
    $5,393 below market
    • 69,910 miles
    • 1 accident, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Banks Chevrolet Buick GMC (148 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Navigation
    • Leather Seats
    Close

    Located in Concord, NH / 148 miles away from New Haven, CT

    Apple CarPlay/Android Auto,Auto-Dimming Inside Rear-View Mirror,Bose Speaker System,Chrome Recovery Hooks,Deep-Tinted Glass,Dual-Zone Automatic Climat...

    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: 1GT42WEY8KF106757
    Stock: T06757
    Certified Pre-Owned: No
    Listed since: 06-16-2025

    • 40,135 miles
    • No accidents, 1 owner, personal use only
    • Star GMC (131 mi away)
    • Back-up camera
    • Sunroof/Moonroof
    • Upgraded Engine
    • Heads up display
    • Towing Hitch
    Close

    Located in Easton, PA / 131 miles away from New Haven, CT

    **CLEAN CARFAX!!!, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Bed Mounted Power Outlet, 120-Volt Instrument Panel Power Outlet, 2 USB Ports (First ...

    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: 1GT49WEYXNF350880
    Stock: 8749
    Certified Pre-Owned: No
    Listed since: 07-11-2025

  • Stock photo**
    • 111,547 miles
    • No accidents, 2 owners, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Patriot Buick GMC (157 mi away)
    • AWD/4WD
    • Back-up camera
    • Bluetooth
    • Keyless Entry/Start
    • Upgraded Headlights
    Close

    Located in Boyertown, PA / 157 miles away from New Haven, CT

    2022 GMC Sierra 3500HD SLE Summit White 10-Speed Automatic, 4WD, Black Cloth, 10-Way Power Driver Seat Adjuster w/Lumbar, 12-Volt Rear Auxiliary Power...

    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: 1GT49TEY4NF164248
    Stock: G5243A
    Certified Pre-Owned: No
    Listed since: 06-24-2025

  • $53,995
    great price
    $4,351 below market
    • 91,698 miles
    • No accidents, 1 owner, personal use only
    • 8'2” bed, 6.6l, 8cyl
    • Highline Motor Cars (133 mi away)
    • AWD/4WD
    • Bluetooth
    • Leather Seats
    • Sunroof/Moonroof
    • Keyless Entry/Start
    Close

    Located in Southampton, NJ / 133 miles away from New Haven, CT

    Climb into this rugged yet luxurious 2021 GMC Sierra 3500HD and experience a whole new level of off-road adventure. With the X31 Off-Road Package, ski...

    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: 1GT49WEYXMF218703
    Stock: 218703
    Certified Pre-Owned: No

Showing 1 - 21 out of 251 listings

Consumer Reviews for the GMC Sierra 3500HD

Read recent reviews for the GMC Sierra 3500HD
Overall Consumer Rating
4.6 out of 5 stars12 Reviews
Write a vehicle reviewSee all 12 reviews
  • 5 star
    (83%)
  • 4 star
    (0%)
  • 3 star
    (8%)
  • 2 star
    (8%)
  • 1 star
    (0%)
5 out of 5 stars

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!!!!
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Used 2021 GMC Sierra 3500HD in New Haven, CT Values

Estimated values
2021 GMC Sierra 3500HD SLE 4dr Crew Cab 4WD SB (6.6L 8cyl 6A) with no options
ConditionTrade-InPrivate PartyDealer Retail
Outstanding$33,606$35,596$37,595
Clean$32,991$34,909$36,833
Average$31,966$33,765$35,562
Rough$30,633$32,277$33,911

The average list price of a used 2021 GMC Sierra 3500HD in New Haven, Connecticut is $49,905. The average mileage on a used GMC Sierra 3500HD 2021 for sale in New Haven, Connecticut is 66,550. Based on the average mileage of 66,550 for used 2021 GMC Sierra 3500HD 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 3500HD 2021 in New Haven, Connecticut to be $31,966.

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** This image is a stock photo and may not reflect the model year or color of, and/or equipment offered on, the advertised vehicle.