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U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology
OAV

2026 GMC Sierra 2500HD AT4

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Vehicle Details

VIN1GT4UPEY4TF285090
TrimAT4
Exterior ColorSilver
Drivetrain4WD
Engine6.6L V8
TransmissionAutomatic
Fuel TypeDiesel
Inventory Typenew
MSRP$87,920
Days on Lot106

AT4

Great Deal
$78,92010 mi

Dealer-reported mileage — not independently verified by OAV.

Sioux Falls, SD 57108

Is this 2026 GMC Sierra 2500HD AT4 a good deal?

OAV verdict: Great Deal

Why: Listed at $78,920, comparable market range $79,324–$89,744, based on 14 comparable listings. Days on lot: 106 days (market average 65 days).

Manufacturer MSRPReference

$87,920

This vehicle $78,920 · $9,000 (10%) below MSRP

MSRP is the manufacturer's suggested retail price, shown for reference only. OAV rates new-car deals by how far below the LOCAL COMPARABLE MARKET a vehicle is priced (see OAV's market comparables / MRP and sold-price value / TRV) — not by discount from MSRP, because dealer-supplied MSRP is not independently verified. The advertised price is set by the dealer and may require financing, rebates, trade-in, or other qualifications, and excludes taxes, fees, and dealer add-ons — confirm the out-the-door price with the dealer. How OAV rates new-car deals.

Market price position

$78,920 · $404 below market low

Comparable range
$79,324 – $89,744
vs. market low
— $404 (1% below)
Comparable vehicles
14

Market Retail Price (MRP™)

$84,534

This vehicle $78,920 · $5,614 (7%) below MRP

MRP™ is the midpoint of the comparable market range — the representative price the market is asking for similar vehicles. How MRP works.

True Retail Value (TRV™)

$83,167

This vehicle $78,920 · $4,247 (5%) below TRV

TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-08-15) — an estimate, not an appraisal. How TRV works.

Comparable vehicles nationally recently sold in an estimated 1558 days.

Market Breakdown

Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges are rebuilt from the market snapshot shown above.

Local Range$79,324 – $89,744
Regional Range$79,324 – $89,744

Vern Eide

Sioux Falls, SD

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OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.

About This 2026 GMC Sierra 2500HD

Listing updated: Aug 15, 2026

Listed by a franchise dealer in Sioux Falls, SD · On lot for 106 days · VIN verifiable at NHTSA

This new 2026 GMC Sierra 2500HD AT4 is listed at $78,920 by vern eide in Sioux Falls, SD 57108. It has 10 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Silver. It features a 4WD drivetrain with a 6.6L V8 engine and Automatic transmission.

OAV's AI-powered Price-to-Market analysis rates this vehicle as a Great Deal — priced below market value. Based on 14 comparable listings matched to this vehicle, the estimated market range is $79,324 to $89,744. The local market range in SD is $79,324 to $89,744. These comparisons match year, make, and model and may currently span trims and configurations (trim-level matching is rolling out).

This vehicle has been on the lot for 106 days.

Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).

Market context

This listing is part of OAV's broader Sioux Falls, SD trucks market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.

How this deal is rated

OAV compares this 2026 GMC Sierra 2500HD against similar vehicles currently available in the local and regional market — same make, model, and year range (currently across available trims and configurations; trim-level matching is rolling out), filtered for comparable mileage. Based on where this listing falls in that comparable set, it is rated:

  • Great Deal — priced below the typical range for comparable vehicles.
  • Fair Price — priced within the expected range for comparable vehicles.
  • Overpriced — priced above the typical range for comparable vehicles.

Listings show OAV's PTM-derived deal quality and live market context. OAV-claimed dealers manage their listing profile and route buyer inquiries directly. Paid OAV partners surface additional verification signals.

How this listing is verified

This vehicle listing was aggregated from a franchise dealer in Sioux Falls, SD, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GT4UPEY4TF285090 can be independently verified via the U.S. Department of Transportation's NHTSA VIN decoder, and safety recalls at NHTSA's recall database.

Vehicle attributes (year, make, model, trim, mileage, location) are standardized using OAV's patented methodology (U.S. Patent No. 12,236,477), which normalizes naming conventions and deduplicates cross-listed inventory across the dealership network. Listing data is processed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2026 GMC Sierra 2500HD Market in SD

SD Market Listings

128

Average Price

$78,943

Price Range

$47,490–$109,864

Avg Days on Lot

65

Based on all 128 2024-2028 GMC Sierra 2500HD listings in the SD market, the average asking price is $78,943. This listing at $78,920 is $23 below the broader SD average (0% below the SD average). This is a wider, all-trim comparison across SD; OAV's price verdict above uses the closer comparable set. Comparable prices in SD range from $47,490 to $109,864. Similar vehicles spend an average of 65 days on dealer lots in this market.

Similar GMC Sierra 2500HD Listings in SD

8 similar listings shown (closest matches within ±2 model years) and ±30,000 miles (subject trim: AT4 — compare trims below)