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21st Century Auto Sales Llc

1051 PARKWAY DR, Blackfoot, ID 83221
4.8
4.8 out of 5 stars
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Used 2024 GMC Sierra 3500HD Pro

81,900 miles
For Sale:$48,271

$4,963(-9.3%)price drop

Estimated payment:$1,095/mo.
$0 trade-in, 10% down payment, 48 months, Great credit score

Value ChartA visual chart indicating the fair price range is between $20,200 and $23,800, while the current price is $48,271.$20,200 - $23,800$48,271

  • Priced at $48,271, this vehicle is $24,471 above the high end of its fair market value of $23,800.

  • The current fair market price range is between $20,200 to $23,800.

  • It has 81,900 miles, which is 69,200 (545%) above the median mileage of 12,700.

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

SequenceDatePrice ChangeCurrent Price
1.2/12/2026 (2 months ago)$53,234
2.2/19/2026 (2 months ago)-$4,963 (-9.3%)$48,271
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  • Truck
  • Pickup
  • Crew Cab
  • Extended Front Legroom
  • Condition
    Used
  • Mileage
    81,900miles
  • Aggregate Ratings
    3.4
    3.4 out of 5 stars
  • Generation
    4(2020 - 2026)
  • Drivetrain
    4X4
  • Transmission
    10-Speed Shiftable Automatic
  • Exterior Color
    Summit White (White)Factory Paint Code:GAZ
  • Interior Color
    Black
  • Size Segment
    Heavy Duty
  • Doors
    4
  • Max Seating
    6
  • Final Assembly Point
    Flint, Michigan
  • VIN
    1GT49SEY5RF135891

Engine6.6L V8 Bio Diesel 470hp

  • Fuel Type:Bio Diesel
  • Max Horsepower:470 hp @ 2800 rpm
  • Max Torque:975 ft.lbf @ 1600 rpm
  • Brand:Duramax
  • Displacement:6.6liters
  • Block Type:V
  • Cylinders:8
  • Aspiration:Turbo
  • Fuel Induction:Common Rail Direct Injection
  • Oil Capacity:9.5liters
  • Cam Type:OHV
  • Stroke:3.9
  • Bore:4.06
  • Valves:32

Message from the seller

Duramax 6.6L V8 Turbodiesel Pro CARFAX One-Owner. 2024 GMC Sierra 3500HD Summit White 4WD 10-Speed Automatic KBB Fair Market Range High: $51,450 10-Speed Automatic, 4WD, Black Cloth.


All Vehicles under 100,000 miles at 21st Century Auto Sales, comes with a 1 Month / 1000 Mile 50/50 warranty where the seller is responsible for half of parts and labor.

* Based on opinions and should be considered as general guidance only.

  • Reliability (4)
    4 out of 5 stars
    GMC heavy-duty trucks generally have a strong reputation for reliability, and the 3500HD Pro is built to withstand demanding use. The powertrain options are proven, suggesting good long-term durability, especially with proper maintenance.
  • Maintenance (3)
    3 out of 5 stars
    Maintenance costs are typical for a heavy-duty diesel truck. Parts and labor can be more expensive than for a light-duty vehicle, and regular servicing, especially for the diesel engine, is crucial. However, the service intervals are reasonable.
  • Technology (3)
    3 out of 5 stars
    Technology in the Pro trim is basic but functional. You get essential infotainment with a decent touchscreen and smartphone integration. Don't expect advanced driver-assistance features or a premium sound system; it provides what's necessary for a work truck.
  • Comfort (3)
    3 out of 5 stars
    The Pro trim is work-focused, so comfort is utilitarian. The seats are durable but lack extensive adjustability and plushness. Road noise is present, especially with the diesel engine, but not overly intrusive. It's built for hauling, not pampering.
  • Dynamics (4)
    4 out of 5 stars
    For a heavy-duty truck, the 2024 GMC Sierra 3500HD Pro handles surprisingly well. It feels stable on the highway and the steering is more precise than expected for its size. Maneuvering in tighter spaces still requires caution, but it's manageable.

  • Seating:

    • Seating Rows:2
    • Standard Seating:6
    • Max Seating:6
    • Leg Room (front):44.5in.
    • Leg Room (rear):43.4in.

  • Fuel Tank:

    • Fuel Tank Volume:35.9gallon

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Listed on February 12, 2026 (2 months ago)
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