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Valley Street Auto Sales

8 Valley St, Manchester, NH 03103
4.6
CallMapsInventory
  1. GMC
  3. Sierra 1500
  5. 2021
  7. AT4
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•

2021 GMC Sierra 1500 AT4

Used•105,322 miles
For Sale:
$32,995
Estimated payment:$748/mo.
$0 trade-in, 10% down payment, 48 months, Great credit score

Value Chart$33,200 - $39,000$32,995

  • Priced at $32,995, this vehicle is $205 (1%) below the low end of its fair market value of $33,200.

  • The current fair market price range is between $33,200 to $39,000.

  • It has 105,322 miles, which is 22,222 (27%) above the median mileage of 83,100.

Note: This is an estimate based on a variety of factors (experimental feature). It is intended to provide a fair market value range to help guide your buying decision.
View Full Value Report
2021-gmc-sierra-1500-at4-4x4-4dr-crew-cab-5-8-ft-sb.jpg
2021-gmc-sierra-1500-at4-4x4-4dr-crew-cab-5-8-ft-sb.jpg
2021-gmc-sierra-1500-at4-4x4-4dr-crew-cab-5-8-ft-sb.jpg
2021-gmc-sierra-1500-at4-4x4-4dr-crew-cab-5-8-ft-sb.jpg
2021-gmc-sierra-1500-at4-4x4-4dr-crew-cab-5-8-ft-sb.jpg
  • Truck
  • Pickup
  • Crew Cab
  • Off-Road
  • Extended Front Legroom
  • Vaulted Headroom
  • Condition
    Used
  • Mileage
    105,322
    miles
  • Aggregate Ratings
    3.8
  • Generation
    4(2019 - 2026)
  • Drivetrain
    4X4
  • Transmission
    10-Speed Shiftable Automatic
  • MPG
    14 city
    19 highway
    Max range: 456 miles
  • Exterior Color
    Onyx Black (Black)
    Factory Paint Code:GBA
  • Interior Color
    Jet Black W Kalahari Accents (Black)
    Factory Paint Code:HVD
  • Upholstery
    Leather
  • Size Segment
    1/2 Ton
  • Doors
    4
  • Max Seating
    5
  • Max Towing Capacity
    9,200
    lbs.
  • Weight Class
    6,000-10,000 lbs. (2)
  • Bed Length
    69.9
    in.
  • Ground Clearance
    10.9
    in.
  • NHTSA Safety Ratings
    4
  • Final Assembly Point
    Silao, Mexico
  • VIN
    3GTP9EEL5MG188522
  • Starting MSRP
    $54,700

Engine
6.2L V8 Gasoline 420hp

  • Fuel Type:Gasoline
  • Fuel Quality:87
  • Max Horsepower:420 hp @ 5600 rpm
  • Power to Weight Ratio:12.24lbs/hp
  • Max Torque:460 ft.lbf @ 4100 rpm
  • Brand:EcoTec3
  • Displacement:6.2liters
  • Block Type:V
  • Cylinders:8
  • Aspiration:Naturally Aspirated
  • Fuel Induction:Direct Injection
  • Redline:6,000rpm
  • Oil Capacity:7.6liters
  • Cam Type:OHV
  • Stroke:3.62
  • Bore:4.06
  • Valves:16

Message from the seller

2021 GMC Sierra 1500 AT4 4WD Crew Cab. Onyx Black with Black with Kalahari Accents Leather Interior. 6.2L V8 with 10-Speed Automatic Transmission. AT4 Premium Package, Navigation, Surround and Back-up Camera, Power Sunroof, Heated and Cooled Seats, Heated Steering Wheel, Tow Package, Both Remotes, Loaded. Good Service Records. Looks Like New Inside and Out. Serviced and Inspected – NO Document Fees. Call for a free Carfax Report on this Sierra. (603) 626-5100.

* Based on opinions and should be considered as general guidance only.
  • Reliability (4)
    GMC Sierra models generally have a good reputation for reliability, and the 2021 AT4 is expected to follow suit with robust components and powertrains.
  • Maintenance (3)
    Maintenance costs are typical for a full-size truck, with parts and labor being more expensive than smaller vehicles. Fuel economy, especially with the V8, will be a significant ongoing cost.
  • Technology (4)
    The infotainment system is user-friendly with a responsive touchscreen and good integration for Apple CarPlay/Android Auto. Available safety features are helpful, though not class-leading in every aspect.
  • Comfort (4)
    The cabin is spacious and the seats are generally comfortable, even on longer drives. Road noise is well-managed for a truck, contributing to a pleasant experience.
  • Dynamics (4)
    The AT4's off-road suspension and all-terrain tires provide excellent capability on unpaved roads, absorbing bumps effectively. On pavement, it's competent for a truck, though not car-like in handling.

Comfort & Seating:

  • Heated Seats
  • Heated Steering Wheel
  • Power Seats
  • Ventilated Seats

Convenience:

  • 115V Power Outlet
  • Automatic Climate Control
  • Remote Start

Entertainment:

  • Bluetooth
  • Satellite Radio

Exterior:

  • Heated Mirrors
  • Tinted Windows

Safety:

  • Backup Camera
  • Tire Pressure Monitoring

Technology:

  • Android Auto

  • Seating:

    • Seating Rows:2
    • Standard Seating:5
    • Max Seating:5
    • Head Room (front):43in.
    • Leg Room (front):44.5in.
    • Shoulder Room (front):66in.
    • Hip Room (front):61.2in.
    • Head Room (rear):40.1in.
    • Leg Room (rear):43.4in.
    • Shoulder Room (rear):65.2in.
    • Hip Room (rear):60.2in.

  • Measurements:

    • Length:231.7in.
    • Width:81.2in.
    • Height:78.4in.
    • Bed Length:69.9in.
    • Ground Clearance:10.9in.
    • Wheelbase:147.5in.
    • Front Track:69.5in.
    • Rear Track:69in.

  • Weight:

    • Curb Weight:5,140lbs
    • Gross Weight:7,100lbs
    • Gross Combined Weight:15,000lbs

  • Wheels & Tires:

    • Wheel Diameter:18.0 x 8.5in.
    • Wheel Diameter (rear):18.0 x 8.5in.
    • Tire:265/65R18
    • Tire (rear):265/65R18

  • Performance:

    • Power to Weight Ratio:12.24lbs/hp
    • Turning Circle:46.3ft.
    • Max Payload:2,080lbs
    • Towing Capacity:9,200lbs
    • Max Towing Capacity:9,200lbs

  • Fuel Tank:

    • Fuel Tank Volume:24gallon

All warranties have now EXPIRED
  • Corrosion Perforation
    6 years/100,000 miles
  • Courtesy Transportation
    5 years/100,000 miles
  • Diesel Engine Transferable Powertrain
    5 years/100,000 miles
  • Roadside Assistance
    5 years/60,000 miles
  • Transferable Powertrain
    5 years/60,000 miles
  • Bumper to Bumper
    3 years/36,000 miles
  • Corrosion
    3 years/36,000 miles
  • First Scheduled Maintenance
    1 years/unlimited miles

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Listed on January 23, 2026 (a month ago)
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MPG & Max Range: Fuel economy estimates are provided by the EPA and are intended for comparison purposes only. Your actual mileage will vary depending on driving conditions, vehicle condition, and other factors.
Price: Prices shown may not include taxes, fees, or other charges. Prices and availability are subject to change without notice. Contact the seller for the most current pricing information.
Options & Features: Installed options may not be shown. Contact the seller for more information about available features and options.