2021 GMC Sierra 1500 AT4

Listed by a franchise dealer in Oshkosh, WI · On lot for 59 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 1500 AT4 is listed at $29,637 by bergstrom cadillac of oshkosh in Oshkosh, WI 54904. It has 141,507 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Red. It features a 4WD drivetrain with a 5.3L V8 engine and Automatic transmission.

OAV's independent, evidence-backed Price-to-Market analysis rates this vehicle as Fair Price — priced in line with the supported comparable range. Based on 10 comparable listings matched to this vehicle, the estimated market range is $29,030 to $43,194. 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 59 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 Oshkosh, 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 2021 GMC Sierra 1500 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 Oshkosh, WI, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTP9EEDXMZ210104 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.

2021 GMC Sierra 1500 Market in WI

Based on all 397 2019-2023 GMC Sierra 1500 listings in the WI market, the average asking price is $37,807. This listing at $29,637 is $8,170 below the broader WI average (22% below 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 $28,000 to $48,127. Similar vehicles spend an average of 63 days on dealer lots in this market.

Similar GMC Sierra 1500 Listings in WI

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