2021 GMC Sierra 1500

Listed by an independent dealer in Montclair, CA · On lot for 3 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 1500 SLT is listed at $37,130 by stg montclair in Montclair, CA 91763. It has 37,579 miles on the odometer. The exterior color is Blue. It features a RWD drivetrain with a 5.3L V8 engine and Automatic transmission.

OAV's AI-powered Price-to-Market analysis rates this vehicle as Fair Price — priced at market value. Based on 26 similar vehicles in the Montclair market, the estimated market range is $29,503 to $53,512.

This vehicle has been on the lot for 3 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 Montclair, CA trucks market analysis. OAV compares vehicles using local and regional price-to-market ranges, days-on-lot, comparable count, and demand signals where available.

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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, 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 an independent dealer in Montclair, CA, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTP8DED1MZ204611 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 updated continuously; Price-to-Market analysis uses comparable vehicles within the same geographic market.

2021 GMC Sierra 1500 Market in CA

Based on 1,343 comparable 2019-2023 GMC Sierra 1500 listings in CA, the average asking price is $39,981. This listing at $37,130 is $2,851 below average (7% below market). Comparable prices in CA range from $15,780 to $69,981. Similar vehicles spend an average of 55 days on dealer lots in this market.

Similar GMC Sierra 1500 Listings in CA

8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: SLT — compare trims below)