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368 listings
- $46,877great price$6,981 below market
- 97,125 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Brattleboro Auto Mall (127 mi away)
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Located in Brattleboro, VT / 127 miles away from South Portland, ME
Priced below KBB Fair Purchase Price! This 2020 Onyx Black GMC Sierra 3500HD AT4 4WD is well equipped and includes these features and benefits: AT4 Pr...
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: 1GT49VEY9LF239762
Stock: G25212A
Certified Pre-Owned: No
Listed since: 04-30-2025 - Price Drop$59,891good price$3,496 below market
- 41,275 miles
- 2 accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Performance Buick GMC of Woodbridge (297 mi away)
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Located in Woodbridge, NJ / 297 miles away from South Portland, ME
10-Speed Automatic, 4WD, Jet Black w/Kalahari Accents w/Perforated Leather-Appointed Front Seat Trim.** OIL CHANGES FOR LIFE!! With purchase or lease ...
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: 1GT49VEY0LF217553
Stock: GW1030
Certified Pre-Owned: No
Listed since: 05-15-2025 - $54,987fair price$718 below market
- 99,210 miles
- No accidents, 2 owners, personal use
- 6'10” bed, 6.6l, 8cyl
- Banks Chevrolet Buick GMC (70 mi away)
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Located in Concord, NH / 70 miles away from South Portland, ME
10-Speed Automatic, 4WD, Jet Black Leather.Clean CARFAX.2020 GMC Sierra 3500HD Denali Denali 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: 1GT49WEY5LF151359
Stock: T51359
Certified Pre-Owned: No
Listed since: 05-14-2025 - $60,984great price$8,788 below market
- 23,150 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Davidson Chevrolet Buick GMC (283 mi away)
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Located in Watertown, NY / 283 miles away from South Portland, ME
2021 GMC Sierra 3500HD SLT 4WD Duramax 6.6L V8 Turbodiesel 10-Speed Automatic Pacific Blue MetallicLane Change Alert w/Side Blind Zone Alert, Goosenec...
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: 1GT49UEY4MF246503
Stock: W218155
Certified Pre-Owned: No
Listed since: 04-28-2025 - New ListingNot Priced
- 41,634 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Star GMC Quakertown (343 mi away)
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Located in Quakertown, PA / 343 miles away from South Portland, ME
6-Speed Automatic, 4WD, Jet Black Vinyl. 2020 GMC Sierra 3500HD Summit White 4WD 6-Speed Automatic 4D Crew Cab Recent Arrival!HUGE Memorial Day Sale!!...
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$51,498great price$4,847 below market
- 89,469 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Handy Buick GMC (162 mi away)
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Located in Saint Albans, VT / 162 miles away from South Portland, ME
Priced below KBB Fair Purchase Price! CARFAX One-Owner.4x4, Diesel, Customer Trade In, 10-Way Power Driver Seat Adjuster w/Lumbar, 12-Volt Rear Auxili...
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: 1GT49WEY2MF173952
Stock: 16812A
Certified Pre-Owned: No
Listed since: 11-22-2024 - Price Drop$56,319great price$9,507 below market
- 66,582 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Hurd Auto Mall (141 mi away)
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Located in Johnston, RI / 141 miles away from South Portland, ME
Recent Arrival! Certified. At Hurd Auto Mall, proudly part of the Balise Family, we have been honored to serve the Rhode Island community for over 85 ...
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: 1GT49WEY9MF223827
Stock: JG2585B
Certified Pre-Owned: Yes
Listed since: 05-08-2025 - $63,487great price$4,225 below market
- 30,646 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Springfield GMC (115 mi away)
Close
Located in North Springfield, VT / 115 miles away from South Portland, ME
Take advantage of our exclusive Big Deal Plus+ plan which includes 2 years of UNLIMITED scheduled maintenance at no extra charge! You will enjoy 2 yea...
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: 1GT49WEYXMF231743
Stock: ST25306A
Certified Pre-Owned: No
Listed since: 05-12-2025 - 138,432 miles
- 1 accident, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Star GMC Quakertown (343 mi away)
Close
Located in Quakertown, PA / 343 miles away from South Portland, ME
2020 GMC Sierra 3500HD Onyx Black AT4 4WD 10-Speed Automatic 4D Crew CabHUGE Memorial Day Sale!! Offering Lifetime Powertrain Warranties on most of ou...
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: 1GT49VEY5LF164431
Stock: Q25357A
Certified Pre-Owned: No
Listed since: 05-09-2025- Price Drop$46,400good price$5,184 below market
- 111,744 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Irwin Chevrolet (60 mi away)
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Located in Laconia, NH / 60 miles away from South Portland, ME
Priced below KBB Fair Purchase Price! Clean CARFAX. CARFAX One-Owner.10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather.Ebony Twilight M...
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: 1GT49VEY4MF310562
Stock: CMPT026
Certified Pre-Owned: No
Listed since: 04-05-2025 - $49,999good price$467 below market
- 96,864 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Patriot Buick GMC (358 mi away)
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Located in Boyertown, PA / 358 miles away from South Portland, ME
CARFAX One-Owner. Clean CARFAX. 2019 GMC Sierra 3500HD Denali Onyx Black Allison 1000 6-Speed Automatic, 4WD, Cocoa/Dune w/Perforated Leather Appointe...
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: 1GT42WEYXKF207685
Stock: G5175A
Certified Pre-Owned: No
Listed since: 04-22-2025 - Price Drop$62,000good price$3,067 below market
- 27,933 miles
- 1 accident, 1 owner, personal use
- 6'10” bed, 6.6l, 8cyl
- Koons Tysons Chevy GMC (488 mi away)
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Located in Vienna, VA / 488 miles away from South Portland, ME
POWER MOONROOF / SUNROOF / SINGLE PANE ROOF, NAVIGATION / GPS / NAV, TECHNOLOGY PACKAGE, BLIND SPOT MONITORING / BLIND SPOT ALERT, LANE DEPARTURE WARN...
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: 1GT49WEY6MF266103
Stock: 00KB0029
Certified Pre-Owned: No
Listed since: 04-02-2025 - $59,998fair price$2,443 below market
- 69,332 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- CarMax Waterbury (201 mi away)
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Located in Waterbury, CT / 201 miles away from South Portland, ME
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: 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: 1GT49WEYXMF255850
Stock: 26816717
Certified Pre-Owned: No - $40,995fair price$1,581 below market
- 87,984 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 6l, 8cyl
- Bensons Chevrolet (123 mi away)
Close
Located in Ludlow, VT / 123 miles away from South Portland, ME
2019 GMC Sierra 3500HD SLT Onyx BlackVortec 6.0L V8 SFI Flex Fuel VVT 4WD 6-Speed Automatic with OverdriveCARFAX One-Owner. Clean CARFAX.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: 1GT12VEG7KF242107
Stock: 9234A
Certified Pre-Owned: No
Listed since: 12-21-2024 - Price Drop$57,987fair price$162 below market
- 81,458 miles
- No accidents, 2 owners, personal use only
- 6'10” bed, 6.6l, 8cyl
- Banks Chevrolet Buick GMC (70 mi away)
Close
Located in Concord, NH / 70 miles away from South Portland, ME
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: 1GT49WEY2MF196017
Stock: T96017
Certified Pre-Owned: No
Listed since: 03-31-2025 - $53,897fair price$780 below market
- 54,883 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 6.6l, 8cyl
- Springfield GMC (115 mi away)
Close
Located in North Springfield, VT / 115 miles away from South Portland, ME
Take advantage of our exclusive Big Deal Plus+ plan which includes 2 years of UNLIMITED scheduled maintenance at no extra charge! You will enjoy 2 yea...
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: 1GT42WEY1KF254863
Stock: ST25339A
Certified Pre-Owned: No
Listed since: 04-30-2025 - $43,550fair price$1,970 above market
- 54,058 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 6.6l, 8cyl
- Romeo Chevrolet Buick GMC (221 mi away)
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Located in Lake Katrine, NY / 221 miles away from South Portland, ME
Romeo GM Center Proudly presents this 2021 GMC Sierra 3500HD with Suspension Package, 2-Speed Electronic Shift Transfer Case, 3.73 Rear Axle Ratio, 4-...
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: 1GT49SE75MF209536
Stock: 25178A
Certified Pre-Owned: No
Listed since: 03-10-2025 - 7,638 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Ourisman Honda of Tysons Corner (488 mi away)
Close
Located in Vienna, VA / 488 miles away from South Portland, ME
ONE OWNER, FACTORY WARRENTY, BACKUP CAMERA / REAR VIEW CAMERA / REVERSE CAMERA, 360 CAMERA / SURROUND VIEW, ADAPTIVE CRUISE CONTROL / ACC / DYNAMIC RA...
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: 1GT49WEYXMF304867
Stock: Z304867
Certified Pre-Owned: No
Listed since: 05-17-2025- $56,703fair price$456 above market
- 40,822 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 6.6l, 8cyl
- St. Johnsbury GMC (102 mi away)
Close
Located in Saint Johnsbury, VT / 102 miles away from South Portland, ME
Take advantage of our exclusive Big Deal Plus+ plan which includes 2 years of UNLIMITED scheduled maintenance at no extra charge! You will enjoy 2 yea...
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: 1GT42WEY9KF257705
Stock: SJG250399A
Certified Pre-Owned: No
Listed since: 05-23-2025 - Price Drop
- 102,951 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Weirs GMC (21 mi away)
Close
Located in Arundel, ME / 21 miles away from South Portland, ME
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 - 79,635 miles
- No accidents, 1 owner, personal use only
- 6'10” bed, 6.6l, 8cyl
- Bidleman Ford Auburn (319 mi away)
Close
Located in Auburn, NY / 319 miles away from South Portland, ME
DENALI ULTIMATE*, *DURAMAX DIESEL*, *SUNROOF*, *HEATED LEATHER*, *LOCAL ONE OWNER*, *CLEAN CARFAX*, *CARGO CONVENIENCE PKG*, *WE TRADE / FINANCE TRUCK...
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: 1GT49WEY0MF146152
Stock: F1276B
Certified Pre-Owned: No
Listed since: 04-26-2025
Showing 1 - 21 out of 368 listings
Consumer Reviews for the GMC Sierra 3500HD
Read recent reviews for the GMC Sierra 3500HD
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!!!!
Used 2020 GMC Sierra 3500HD in South Portland, ME Values
Estimated values
2020 GMC Sierra 3500HD AT4 4dr Crew Cab 4WD SB (6.6L 8cyl Turbodiesel 10A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $40,368 | $44,570 | $48,624 |
| Clean | $39,512 | $43,600 | $47,537 |
| Average | $38,087 | $41,982 | $45,725 |
| Rough | $36,233 | $39,880 | $43,369 |
The average list price of a used 2020 GMC Sierra 3500HD in South Portland, Maine is $54,151. The average mileage on a used GMC Sierra 3500HD 2020 for sale in South Portland, Maine is 68,706. Based on the average mileage of 68,706 for used 2020 GMC Sierra 3500HD for sale in South Portland, ME 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 2020 in South Portland, Maine to be $38,087.
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