Vehicle Details
2021 GMC Sierra 1500
AT4
Billings, MT 59106
Is this 2021 GMC Sierra 1500 AT4 a good deal?
OAV verdict: Unscored
Why: Listed at $38,221, comparable market range $35,970–$43,199, based on 5 comparable listings. Days on lot: 7 days (market average 92 days).
Market price position
$38,221 · within market range
- Regional range
- $35,970 – $43,199
- vs. market
- $2,251 above low · $4,978 below high
- Comparable vehicles
- 5
Similar vehicles recently sold in an estimated 16–56 days.
Market Breakdown
Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges refresh daily.
Dealer Info
Billings, MT
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About This 2021 GMC Sierra 1500
Listing updated: May 27, 2026Listed by a franchise dealer in Billings, MT · On lot for 7 days · VIN verifiable at NHTSA
This used 2021 GMC Sierra 1500 AT4 is listed at $38,221 by a franchise dealer in Billings, MT 59106. It has 101,137 miles on the odometer. The exterior color is White. It features a 4WD drivetrain with a 3.0L I6 engine and Automatic transmission.
OAV's AI-powered Price-to-Market analysis rates this vehicle as Unscored due to insufficient comparable data. Based on 5 similar vehicles in the Billings market, the estimated market range is $35,970 to $43,199. The local market range in MT is $35,970 to $43,199.
This vehicle has been on the lot for 7 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 Billings, MT 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 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 a franchise dealer in Billings, MT, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTU9EET0MZ233384 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 refreshed daily; Price-to-Market analysis uses comparable vehicles within the same geographic market.
2021 GMC Sierra 1500 Market in MT
Comparable Vehicles
385
Average Price
$39,427
Price Range
$21,990–$63,958
Avg Days on Lot
92
Based on 385 comparable 2019-2023 GMC Sierra 1500 listings in MT, the average asking price is $39,427. This listing at $38,221 is $1,206 below average (3% below market). Comparable prices in MT range from $21,990 to $63,958. Similar vehicles spend an average of 92 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in MT
8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: AT4 — compare trims below)
2021 GMC Sierra 1500
AT4
Hardin, MT
2019 GMC Sierra 1500
AT4
Belgrade, MT
2019 GMC Sierra 1500
AT4
Bozeman, MT
2019 GMC Sierra 1500
AT4
Manhattan, MT
2019 GMC Sierra 1500
AT4
Billings, MT
2019 GMC Sierra 1500
AT4
Missoula, MT
2020 GMC Sierra 1500
AT4
Belgrade, MT
2020 GMC Sierra 1500
AT4
Bozeman, MT