2021 GMC Sierra 1500 SLT

Listed by an independent dealer in McAllen, TX · On lot for 151 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 1500 SLT is listed at $31,336 by trevinos auto mart in McAllen, TX 78503. It has 96,569 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Brown. It features a RWD 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 at market value. Based on 20 comparable listings matched to this vehicle, the estimated market range is $24,950 to $39,995. The local market range in TX is $24,950 to $39,995. These comparisons match year, make, model, and market, 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 151 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 McAllen, TX trucks market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.

• View the full McAllen, TX trucks market →
• All vehicles in McAllen, TX →
• All vehicles in TX →
• All vehicles from this dealer →

How this deal is rated

OAV compares this 2021 GMC Sierra 1500 against similar vehicles currently available in the local and regional market — 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 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 an independent dealer in McAllen, TX, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GTP8DED2MG142121 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.

2021 GMC Sierra 1500 Market in TX

Based on all 1,445 2019-2023 GMC Sierra 1500 listings in the TX market, the average asking price is $39,689. This listing at $31,336 is $8,353 below the broader TX average (21% below the TX average). This is a wider, all-trim comparison across TX; OAV's price verdict above uses the closer comparable set. Comparable prices in TX range from $11,900 to $102,495. Similar vehicles spend an average of 162 days on dealer lots in this market.

Similar GMC Sierra 1500 Listings in TX

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