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4,257 listings
- Price Drop$47,623great price$8,167 below market
- 24,032 miles
- No accidents, 2 owners, personal use
- 5'10” bed, 6.2l, 8cyl
- Mercedes-Benz of Lancaster (396 mi away)
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Located in East Petersburg, PA / 396 miles away from South Portland, ME
New Price! Odometer is 26810 miles below market average! Onyx Black 2021 GMC Sierra 1500 AT4 4WD 10-Speed Automatic EcoTec3 6.2L V8
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: 1GTP9EEL9MZ295332
Stock: PT6906
Certified Pre-Owned: No
Listed since: 06-23-2025 - Price Drop$36,695great price$7,028 below market
- 82,226 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- McGovern GMC (114 mi away)
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Located in Westborough, MA / 114 miles away from South Portland, ME
Recent Arrival! McGovern GMC is proud to present this...Summit White 2021 GMC Sierra 1500 SLT EcoTec3 5.3L V8 10-Speed Automatic CARFAX One-Owner. Cl...
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: 3GTU9DEDXMG292686
Stock: GM3499A
Certified Pre-Owned: No
Listed since: 06-23-2025 - $30,987great price$4,187 below market
- 51,654 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 5.3l, 8cyl
- McGovern Hyundai 93 (86 mi away)
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Located in Wilmington, MA / 86 miles away from South Portland, ME
McGovern Hyundai Rt 93 is proud to present this... Quicksilver Metallic 2021 GMC Sierra 1500 SLE 4WD EcoTec3 5.3L V8 8-Speed Automatic 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: 1GTR9BED7MZ266640
Stock: HW810
Certified Pre-Owned: No
Listed since: 06-18-2025 - Price Drop$45,797great price$5,457 below market
- 30,638 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 6.2l, 8cyl
- Mercedes-Benz of Lynnfield (85 mi away)
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Located in Lynnfield, MA / 85 miles away from South Portland, ME
INSPECTION COMPLETED Every Herb Chambers Certified pre-owned vehicle receives a complete multi-point inspection by factory trained technicians who ins...
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: 1GTU9FEL5MZ234942
Stock: F051741A
Certified Pre-Owned: No
Listed since: 06-28-2025 - Price Drop$43,894great price$7,848 below market
- 47,051 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
Odometer is 12091 miles below market average! Clean CARFAX.Onyx Black 2021 GMC Sierra 1500 AT4 4D Crew Cab 4WD 10-Speed Automatic EcoTec3 6.2L V8Famil...
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: 1GTP9EEL6MZ152533
Stock: 6749P
Certified Pre-Owned: No
Listed since: 06-08-2025 - Price Drop$35,995great price$6,379 below market
- 82,583 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- Automotive Avenues (307 mi away)
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Located in Wall, NJ / 307 miles away from South Portland, ME
Just arrived is this completely loaded, NO-ACCIDENT, ONE-OWNER, NONSMOKER 2021 GMC Sierra 1500 AT4 Crew Cab 4x4! This full-size truck boasts a powerfu...
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:
18 Combined MPG (16 City/21 Highway)
Listing Information:
VIN: 1GTP9EEDXMZ156108
Stock: 53081
Certified Pre-Owned: No
Listed since: 04-08-2025 - Price Drop$42,439great price$7,989 below market
- 53,861 miles
- No accidents, 1 owner, personal use only
- 6'7” bed, 6.2l, 8cyl
- Capital City GMC (120 mi away)
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Located in Berlin, VT / 120 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: 1GTU9FEL7MZ243884
Stock: MT25291A
Certified Pre-Owned: No
Listed since: 05-20-2025 - Price Drop$35,888great price$6,084 below market
- 47,435 miles
- No accidents, 1 owner, personal use
- 5'10” bed, 6.2l, 8cyl
- Performance Buick GMC of Woodbridge (294 mi away)
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Located in Woodbridge, NJ / 294 miles away from South Portland, ME
10-Speed Automatic, 4WD, Jet Black w/Perf Leather-Appointed Front Outboard Seat Trim.** OIL CHANGES FOR LIFE!! With purchase or lease of your New, Pre...
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: 3GTU9DEL6MG469693
Stock: GW0923
Certified Pre-Owned: No
Listed since: 02-27-2025 - $44,900great price$5,501 below market
- 47,250 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- McGovern Ford of Lowell (87 mi away)
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Located in Lowell, MA / 87 miles away from South Portland, ME
McGovern Ford at Drum Hill is proud to present this...White Frost Tricoat 2021 GMC Sierra 1500 Denali 4WD 3.0L I6 10-Speed Automatic Clean CARFAX. One...
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: 3GTU9FET2MG360191
Stock: FN6295A
Certified Pre-Owned: No
Listed since: 05-12-2025 - New Listing$36,553great price$6,769 below market
- 77,754 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- Lynnes Subaru (280 mi away)
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Located in Bloomfield, NJ / 280 miles away from South Portland, ME
This 2021 GMC Sierra 1500 has passed the Lynnes comprehensive 172 point inspection with flying colors. Our ASE certified technicians have inspected 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: 3GTU9DEL4MG124453
Stock: SE3357P
Certified Pre-Owned: No
Listed since: 07-31-2025 - Price Drop$46,800good price$4,259 below market
- 29,621 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- McGovern Ford of Framingham (109 mi away)
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Located in Framingham, MA / 109 miles away from South Portland, ME
McGovern Ford of Framingham is proud to present this McGovern Certified... Onyx Black 2021 GMC Sierra 1500 Denali 4WD EcoTec3 6.2L V8 10-Speed Automat...
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: 3GTU9FEL6MG334628
Stock: FM9208A
Certified Pre-Owned: No
Listed since: 06-14-2025 - $47,045good price$5,322 below market
- 22,969 miles
- No accidents, personal use only
- 6'7” bed, 6.2l, 8cyl
- Key Chrysler Dodge Jeep Ram of Rochester (41 mi away)
Close
Located in Rochester, NH / 41 miles away from South Portland, ME
Clean CARFAX. Onyx Black 2021 GMC Sierra 1500 Denali Ultimate 4WD 10-Speed Automatic EcoTec3 6.2L V8 *GREAT CONDITION*, 10-Speed Automatic, 4WD, Black...
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: 1GTU9FELXMZ253423
Stock: JJ10785
Certified Pre-Owned: No
Listed since: 07-18-2025 - $32,000great price$3,096 below market
- 93,671 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- Westboro Toyota (115 mi away)
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Located in Westborough, MA / 115 miles away from South Portland, ME
10-Speed Automatic, 4WD, Black Cloth.At Westboro Toyota we want you to know that all our vehicles are priced at a competitive value position to the ...
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: 3GTU9CET7MG293683
Stock: T74671A
Certified Pre-Owned: No
Listed since: 10-09-2024 - Price Drop$46,498good price$4,451 below market
- 34,191 miles
- No accidents, 2 owners, personal use
- 6'7” bed, 6.2l, 8cyl
- Handy Buick GMC (162 mi away)
Close
Located in Saint Albans, VT / 162 miles away from South Portland, ME
Priced below KBB Fair Purchase Price!4x4, Recently Traded In, Low Miles!, 6.5ft Bed!, 10-Speed Automatic, 4WD, Dark Walnut/Dark Ash Grey Leather, 10-W...
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: 3GTU9FEL4MG333865
Stock: 17074A
Certified Pre-Owned: No
Listed since: 06-04-2025 - $43,987good price$3,090 below market
- 43,288 miles
- No accidents, 2 owners, personal use only
- 5'10” bed, 5.3l, 8cyl
- Davidson Chevrolet Cadillac Buick GMC of Rome (263 mi away)
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Located in Rome, NY / 263 miles away from South Portland, ME
10-Speed Automatic, 4WD, Jet Black Leather. 2021 GMC Sierra 1500 SLT 4WD Odometer is 9732 miles below market average! Summit White 10-Speed Automatic ...
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: 3GTU9DED9MG150880
Stock: R213463A
Certified Pre-Owned: No
Listed since: 06-25-2025 - $43,947good price$4,359 below market
- 47,574 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- Robert Basil Buick GMC (430 mi away)
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Located in Orchard Park, NY / 430 miles away from South Portland, ME
CARFAX One-Owner. Dark Sky Metallic 2021 GMC Sierra 1500 Denali 4WD 10-Speed Automatic 3.0L I6 10-Speed Automatic, 4WD, Jet Black Leather, 12-Volt Rea...
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: 1GTU9FET6MZ211766
Stock: RB251484A
Certified Pre-Owned: No
Listed since: 07-12-2025 - $40,883good price$2,580 below market
- 72,418 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 3l, 6cyl
- Ingersoll Auto of Danbury (221 mi away)
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Located in Danbury, CT / 221 miles away from South Portland, ME
Odometer is 2106 miles below market average! CARFAX One-Owner. Clean CARFAX. Adaptive Ride Control Suspension, Adaptive suspension, Apple CarPlay/Andr...
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: 3GTU9FET0MG234489
Stock: T234489
Certified Pre-Owned: No
Listed since: 06-25-2025 - $44,998good price$4,576 below market
- 67,634 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 6.2l, 8cyl
- CarMax Easton (325 mi away)
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Located in Easton, PA / 325 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: 3GTP9EEL7MG323869
Stock: 27366367
Certified Pre-Owned: No - $39,950good price$4,260 below market
- 60,000 miles
- No accidents, 2 owners, personal use
- 5'10” bed, 5.3l, 8cyl
- Leesburg Buick GMC (489 mi away)
Close
Located in Leesburg, VA / 489 miles away from South Portland, ME
2021 GMC Sierra 1500 SLT White Frost Tricoat 4WD EcoTec3 5.3L V8Low Miles, Local Trade, Back up camera, Bluetooth Hands-free, Sunroof/Moonroof, Sier...
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: 3GTU9DED8MG226900
Stock: 40102A
Certified Pre-Owned: No
Listed since: 06-03-2025 - New Listing$37,000good price$4,870 below market
- 81,580 miles
- No accidents, 1 owner, personal use only
- 5'10” bed, 5.3l, 8cyl
- Handy Buick GMC (162 mi away)
Close
Located in Saint Albans, VT / 162 miles away from South Portland, ME
Recent Arrival!CARFAX One-Owner. Clean CARFAX.Customer Trade In, 10-Speed Automatic, 4WD, Jet Black Leather, 10-Way Power Driver Seat Adjuster w/Lumba...
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: 3GTU9DED2MG214998
Stock: 17205A
Certified Pre-Owned: No
Listed since: 07-31-2025 - Price Drop$31,595good price$2,329 below market
- 57,878 miles
- No accidents, 1 owner, personal use
- 6'7” bed, 2.7l, 4cyl
- Mercedes-Benz of Little Silver (298 mi away)
Close
Located in Little Silver, NJ / 298 miles away from South Portland, ME
Recent Arrival! Mercedes-Benz of Little Silver is proud to present this...Quicksilver Metallic 2021 GMC Sierra 1500 Elevation 2.7L Turbo 8-Speed Auto...
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 (18 City/21 Highway)
Listing Information:
VIN: 1GTR9CEK0MZ411098
Stock: ML545
Certified Pre-Owned: No
Listed since: 06-25-2025
Showing 1 - 21 out of 4,257 listings
Consumer Reviews for the GMC Sierra 1500
Read recent reviews for the GMC Sierra 1500
Valve lifter problem
Rod, 09/02/2021
2021 GMC Sierra 1500 SLT 4dr Crew Cab 4WD 5.8 ft. SB (5.3L 8cyl 10A)
I have a 2021 GMC 5.3L w/10spd transmission. I pull a 21’ cargo trailer w/2 Polaris Trail Rzr’s. Yesterday at 13,800 miles the valve lifter on #5 cylinder went out. We were 80 miles from home in the middle of no-where. We limped home.
The truck is beautiful, pulls great and gets good mileage, but GM should let customers know about this kind of potential problem.
The dealer told me … today that it could take a month to get parts and get it fixed. I need the truck almost every day, but now I walk for a month! NOT HAPPY! I’ve been a GMC customer for 35 years and bought north of 17 new pickups. Never had this problem. When this is fixed I will have to look at other brands.
Used 2021 GMC Sierra 1500 in South Portland, ME Values
Estimated values
2021 GMC Sierra 1500 AT4 4dr Crew Cab 4WD 5.8 ft. SB (6.2L 8cyl 10A) with no options
| Condition | Trade-In | Private Party | Dealer Retail |
|---|---|---|---|
| Outstanding | $37,590 | $40,151 | $42,724 |
| Clean | $36,902 | $39,376 | $41,858 |
| Average | $35,756 | $38,085 | $40,414 |
| Rough | $34,265 | $36,407 | $38,537 |
The average list price of a used 2021 GMC Sierra 1500 in South Portland, Maine is $40,737. The average mileage on a used GMC Sierra 1500 2021 for sale in South Portland, Maine is 55,015. Based on the average mileage of 55,015 for used 2021 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 2021 in South Portland, Maine to be $35,756.
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