2026 GMC Sierra 2500HD AT4

Listed by a franchise dealer in Oak Creek, WI · On lot for 103 days · VIN verifiable at NHTSA

This new 2026 GMC Sierra 2500HD AT4 is listed at $86,719 by kunes buick gmc of oak creek in Oak Creek, WI 53154. It has 15 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Black. It features a 4WD drivetrain with a 6.6L V8 engine and Automatic transmission.

OAV's independent, evidence-backed Price-to-Market analysis rates this vehicle as a Great Deal — priced below market value. Based on 17 comparable listings matched to this vehicle, the estimated market range is $88,437 to $90,606. The comparable range in WI is $88,437 to $90,606. These comparisons match year, make, and model, using trim where trim data supports it. OAV does not adjust comparables for odometer — where mileage would distort a verdict, it withholds one instead.

This vehicle has been on the lot for 103 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 Oak Creek, WI trucks market analysis. OAV compares vehicles by local and regional price-to-market ranges and comparable count; days-on-lot and demand signals are shown separately, not as verdict inputs.

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How this deal is rated

OAV compares this 2026 GMC Sierra 2500HD against similar vehicles currently available for sale — same make, model, and year range, using trim where trim data supports it. OAV does not adjust comparables for odometer; on very high-mileage vehicles it withholds a verdict rather than overstate a discount the odometer explains. Based on where this listing falls in that comparable set, it is rated:

• Great Deal — priced below the comparable-range floor by a meaningful margin (OAV's minimum-gap rule); a listing below the floor by less than that margin is Fair Price.
• 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 can surface additional verification signals, but commercial participation never changes a listing's Price-to-Market verdict, eligibility, ranking, or confidence.

How this listing is verified

This vehicle listing was aggregated from a franchise dealer in Oak Creek, WI, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GT4UPEY3TF297988 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.

2026 GMC Sierra 2500HD Market in WI

Based on all 603 2024-2028 GMC Sierra 2500HD listings in the WI market, the average asking price is $76,633. This listing at $86,719 is $10,086 above the broader WI average (13% above the WI average). This is a wider, all-trim comparison across WI; OAV's price verdict above uses the closer comparable set. Comparable prices in WI range from $56,798 to $92,865. Similar vehicles spend an average of 74 days on dealer lots in this market.

Similar GMC Sierra 2500HD Listings in WI

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