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4,174 listings
- $38,998great price$4,991 below market
- 79,891 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- The Truck Store Dover (410 mi away)
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Located in Dover, DE / 410 miles away from South Portland, ME
4X4, ALL POWER OPTIONS, APPLE CAR PLAY / ANDROID AUTO, BACK-UP CAMERA, BLUETOOTH HANDS FREE PHONE, Sierra 1500 SLT, 4D Crew Cab, EcoTec3 5.3L V8, 10-S...
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:
19 Combined MPG (16 City/22 Highway)
Listing Information:
VIN: 3GTU9DED6LG110240
Stock: C2132
Certified Pre-Owned: No
Listed since: 06-17-2025 - $25,153great price$4,379 below market
- 36,415 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 5.3l, 8cyl
- Hurd Auto Mall (138 mi away)
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Located in Johnston, RI / 138 miles away from South Portland, ME
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: 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: 3GTN9AEFXLG180439
Stock: JG2514A
Certified Pre-Owned: No
Listed since: 07-14-2025 - Price Drop$32,779great price$5,390 below market
- 36,045 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 3l, 6cyl
- Irwin Chevrolet (59 mi away)
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Located in Laconia, NH / 59 miles away from South Portland, ME
Priced below KBB Fair Purchase Price! Odometer is 31512 miles below market average! Clean CARFAX. CARFAX One-Owner.10-Speed Automatic, 4WD, 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: 1GTV9CET6LZ322142
Stock: CPP036
Certified Pre-Owned: No
Listed since: 06-23-2025 - Price Drop$27,000great price$2,795 below market
- 67,165 miles
- No accidents, 1 owner, personal use
- 5'10” bed, 2.7l, 4cyl
- Carriage Traders (170 mi away)
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Located in South Glens Falls, NY / 170 miles away from South Portland, ME
Delivers 22 Highway MPG and 19 City MPG! This GMC Sierra 1500 boasts a Gas I4 2.7L/166 engine powering this Automatic transmission. WORK TRUCK PREFERR...
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: 3GTP9AEK2LG394718
Stock: WR2480
Certified Pre-Owned: No
Listed since: 06-13-2025 - Price Drop$28,259great price$5,721 below market
- 102,362 miles
- No accidents, 2 owners, corporate fleet vehicle
- 5'10” bed, 3l, 6cyl
- Arm Motors (440 mi away)
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Located in Dundalk, MD / 440 miles away from South Portland, ME
AutoCheck Vehicle History Summary
Accident Free Vehicle: Yes
Personal Use Only: No
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: 1GTU9DET1LZ246511
Stock: ARM3461
Certified Pre-Owned: No - $39,546great price$6,350 below market
- 75,565 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- Central GMC of Norwood (107 mi away)
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Located in Norwood, MA / 107 miles away from South Portland, ME
Sooo nice and loaded with all the toys including power sunroof, tonneau cover, heated leather, power package 3.0 litre diesel powerful to pull almost ...
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: 1GTU9EET8LZ293136
Stock: G250263A
Certified Pre-Owned: No
Listed since: 07-15-2025 - $32,282great price$4,430 below market
- 93,616 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- Hurd Auto Mall (138 mi away)
Close
Located in Johnston, RI / 138 miles away from South Portland, ME
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: 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:
19 Combined MPG (16 City/22 Highway)
Listing Information:
VIN: 3GTU9DED6LG242978
Stock: JG2635A
Certified Pre-Owned: No
Listed since: 06-30-2025 - Price Drop$27,900great price$3,180 below market
- 66,753 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 5.3l, 8cyl
- Tim's Truck Capital (60 mi away)
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Located in Epsom, NH / 60 miles away from South Portland, ME
6-Speed Automatic, 4WD, Black Cloth.Tim's Truck Capital is proud to offer this fantastic 2020 GMC Sierra 1500 X31 Off Road in Dark Sky Metallic Beau...
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: 1GTR9AEF6LZ256322
Stock: ZC3632
Certified Pre-Owned: No
Listed since: 03-27-2025 - Price Drop$43,000good price$3,628 below market
- 60,778 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- Weirs GMC (18 mi away)
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Located in Arundel, ME / 18 miles away from South Portland, ME
ONE OWNER, Sierra 1500 Denali, 4D Crew Cab, 3.0L I6, 10-Speed Automatic, 4WD, Carbon Black Metallic, Jet Black Leather, Denali Ultimate Package, 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: 1GTU9FETXLZ312369
Stock: G25414A
Certified Pre-Owned: Yes
Listed since: 06-10-2025 - Price Drop$39,999great price$4,936 below market
- 60,351 miles
- 2 accidents, 1 owner, personal use only
- 6'7” bed, 3l, 6cyl
- Key Chevrolet GMC of Newport (97 mi away)
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Located in Newport, NH / 97 miles away from South Portland, ME
2020 GMC Sierra 1500 Denali 3.0L I6 Onyx Black 10-Speed Automatic, 4WD, Jet Black Leather.At Newport Chevrolet Buick GMC, you win!We believe ther...
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: 3GTU9FET9LG385863
Stock: W4212B
Certified Pre-Owned: No
Listed since: 05-23-2025 - Price Drop$39,499good price$3,635 below market
- 70,100 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 6.2l, 8cyl
- Romeo Chevrolet Buick GMC (219 mi away)
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Located in Lake Katrine, NY / 219 miles away from South Portland, ME
Romeo GM Center Proudly presents this 2020 GMC Sierra 1500 with AT4 Preferred Package (Power Sliding Rear Window w/Rear Defogger, Premium Bose 7-Speak...
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: 3GTP9EEL6LG185322
Stock: 25359SB
Certified Pre-Owned: No
Listed since: 06-07-2025 - $45,495good price$4,465 below market
- 44,258 miles
- No accidents, 1 owner, personal use
- 5'10” bed, 6.2l, 8cyl
- Freehold Buick GMC (309 mi away)
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Located in Freehold, NJ / 309 miles away from South Portland, ME
CLEAN CARFAX/NO ACCIDENTS REPORTED, ONE OWNER, SERVICE RECORDS AVAILABLE, BLUETOOTH/HANDS FREE CELL PHONE, BACK UP CAMERA, 2 SETS OF KEYS, 4X4, NEW TI...
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: 3GTU9FEL8LG318087
Stock: 16595A
Certified Pre-Owned: Yes
Listed since: 06-02-2025 - $46,994good price$4,711 below market
- 51,884 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- Star GMC Quakertown (340 mi away)
Close
Located in Quakertown, PA / 340 miles away from South Portland, ME
LIFETIME POWERTRAIN WARRANTY, CLEAN CARFAX 1 OWNER. 2020 GMC Sierra 1500 Satin Steel Metallic Denali Ultimate package carbon pro 4WD 10-Speed Automati...
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: 1GTU9FEL1LZ165214
Stock: Q450382A
Certified Pre-Owned: No
Listed since: 05-13-2025 - New Listing$39,777good price$3,551 below market
- 59,172 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 6.2l, 8cyl
- Burritt Chrysler Dodge Jeep Ram (310 mi away)
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Located in Oswego, NY / 310 miles away from South Portland, ME
Adaptive Cruise Control - Camera, Automatic Emergency Braking, Bed View Camera, Denali Ultimate Package, Driver Alert Package I, Driver Alert Package ...
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: 3GTU9FEL3LG292515
Stock: W25330B
Certified Pre-Owned: No
Listed since: 06-06-2025 - $39,445good price$2,421 below market
- 86,631 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- Nielsen Ford of Morristown (289 mi away)
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Located in Morristown, NJ / 289 miles away from South Portland, ME
Onyx Black 2020 GMC Sierra 1500 AT4 4WD 10-Speed Automatic 3.0L I6 10-Speed Automatic, 4WD, Jet Black With Kalahari Accents Leather.BRAND NEW FRONT 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: 3GTU9EET1LG295214
Stock: V5079A
Certified Pre-Owned: No
Listed since: 06-17-2025 - $41,000good price$3,448 below market
- 65,293 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- Albrecht Buick GMC of Wakefield (86 mi away)
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Located in Wakefield, MA / 86 miles away from South Portland, ME
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: 3GTU9FEL4LG451221
Stock: BG1126
Certified Pre-Owned: Yes
Listed since: 05-07-2025 - $31,950good price$2,864 below market
- 58,863 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 5.3l, 8cyl
- Weirs GMC (18 mi away)
Close
Located in Arundel, ME / 18 miles away from South Portland, ME
Sierra 1500 SLE, Double Cab, EcoTec3 5.3L V8, 10-Speed Automatic, 4WD, Onyx Black, Black Cloth, 12-Volt Rear Auxiliary Power Outlet, 120-Volt Instrume...
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: 1GTR9BED3LZ103532
Stock: G25174A
Certified Pre-Owned: Yes
Listed since: 07-07-2025 - $40,974good price$3,203 below market
- 63,953 miles
- No accidents, 1 owner, personal use
- 5'10” bed, 6.2l, 8cyl
- Brustolon Buick GMC (179 mi away)
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Located in Mystic, CT / 179 miles away from South Portland, ME
Priced below KBB Fair Purchase Price! Clean CARFAX. Summit White 2020 GMC Sierra 1500 AT4 4D Crew Cab 4WD 10-Speed Automatic EcoTec3 6.2L V8 Family ow...
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: 1GTP9EEL5LZ217466
Stock: 6616P
Certified Pre-Owned: No
Listed since: 04-13-2025 - $34,946good price$3,330 below market
- 80,499 miles
- 1 accident, 2 owners, personal use only
- 5'10” bed, 5.3l, 8cyl
- Sands Chrysler Jeep Dodge Ram (340 mi away)
Close
Located in Quakertown, PA / 340 miles away from South Portland, ME
2020 GMC Sierra 1500 SLTSANDS AUTO GROUP WARRANTY, 4 WHEEL DRIVE, BRAND NEW PA STATE INSPECTION, SANDS MARKET BASED PRICING, 10-Speed Automatic, 4WD...
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:
19 Combined MPG (16 City/22 Highway)
Listing Information:
VIN: 3GTU9DED5LG188833
Stock: BD24094
Certified Pre-Owned: No
Listed since: 06-28-2025 - Price Drop$25,900great price$4,749 below market
- 93,482 miles
- 1 accident, 1 owner, corporate fleet vehicle
- 6'7” bed, 5.3l, 8cyl
- House of Cars (301 mi away)
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Located in Edison, NJ / 301 miles away from South Portland, ME
AutoCheck Vehicle History Summary
Accident Free Vehicle: No
Personal Use Only: No
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:
20 Combined MPG (19 City/22 Highway)
Listing Information:
VIN: 1GTU9CED4LZ129136
Stock: 129136
Certified Pre-Owned: No - Price Drop$15,175fair price$501 below market
- 145,179 miles
- No accidents, 1 owner, personal use only
- 8'2” bed, 4.3l, 6cyl
- Sands Ford of Red Hill (348 mi away)
Close
Located in Red Hill, PA / 348 miles away from South Portland, ME
2020 GMC Sierra 1500**** PERFECT WORK TRUCK ****YOU ARE LOOKING AT A VERY RELIABLE AND AFFORDABLE 2020 GMC SIERRA 1500 4.3L V6 W/ 145K MILES!!!! 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:
17 Combined MPG (16 City/21 Highway)
Listing Information:
VIN: 3GTN8AEH4LG217487
Stock: A3651
Certified Pre-Owned: No
Listed since: 06-20-2025
Showing 1 - 21 out of 4,174 listings
Consumer Reviews for the GMC Sierra 1500
Read recent reviews for the GMC Sierra 1500
Pretty Bummed Out
Matthew Laraway, 12/13/2020
2020 GMC Sierra 1500 4dr Crew Cab 4WD 5.8 ft. SB (4.3L 6cyl 6A)
Hopefully all will get resolved...coming out of a Tahoe with 110,000 miles and excited to get into my 2020 Sierra Denali 1500 Carbon Pro with the Duramax Diesel.
At this point, I have had the car 2 weeks and it has been back at the deal twice, this time going on 4 days. First issue was a coolant sensor that set off an engine warning and the second problem is car wouldn’t start due to … dead battery. Apparently 4 open recalls on the 2020 and I guess my dealer didn’t take care of them? They still can’t figure out what is draining the battery. Truck has about 900 miles on it. Now have the feeling of “what’s going to be messed up?” Every time I press the start button. Certainly takes the enjoyment out of owning this physically beautiful truck. When it works it is an absolute joy to drive and it is the best looking truck on the road....all that said....I want it gone.
Used 2020 GMC Sierra 1500 in South Portland, ME Values
Estimated values
2020 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 10A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $31,538 | $33,964 | $36,304 |
| Clean | $30,870 | $33,224 | $35,493 |
| Average | $29,756 | $31,992 | $34,140 |
| Rough | $28,308 | $30,390 | $32,381 |
The average list price of a used 2020 GMC Sierra 1500 in South Portland, Maine is $35,051. The average mileage on a used GMC Sierra 1500 2020 for sale in South Portland, Maine is 71,345. Based on the average mileage of 71,345 for used 2020 GMC Sierra 1500 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 1500 2020 in South Portland, Maine to be $29,756.
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