Vehicle Details
2021 GMC Sierra 1500
Base
Phoenix, AZ 85051
Is this 2021 GMC Sierra 1500 Base a good deal?
OAV verdict: Unscored
Why: Listed at $20,000, comparable market range $19,599–$30,995, based on 6 comparable listings. Days on lot: 5 days (market average 53 days).
Market price position
$20,000 · within market range
- Regional range
- $19,599 – $30,995
- vs. market
- $401 above low · $10,995 below high
- Comparable vehicles
- 6
Similar vehicles recently sold in an estimated 22–68 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
Phoenix, AZ
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About This 2021 GMC Sierra 1500
Listing updated: May 22, 2026Listed by an independent dealer in Phoenix, AZ · On lot for 5 days · VIN verifiable at NHTSA
This used 2021 GMC Sierra 1500 Base is listed at $20,000 by an independent dealer in Phoenix, AZ 85051. It has 109,007 miles on the odometer. It features a RWD drivetrain with a 4.3L V6 engine and Automatic transmission.
OAV's AI-powered Price-to-Market analysis rates this vehicle as Unscored due to insufficient comparable data. Based on 6 similar vehicles in the Phoenix market, the estimated market range is $19,599 to $30,995.
This vehicle has been on the lot for 5 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 Phoenix, AZ 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 an independent dealer in Phoenix, AZ, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTR8AEH7MZ240023 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 AZ
Comparable Vehicles
474
Average Price
$38,738
Price Range
$18,995–$75,000
Avg Days on Lot
53
Based on 474 comparable 2019-2023 GMC Sierra 1500 listings in AZ, the average asking price is $38,738. This listing at $20,000 is $18,738 below average (48% below market). Comparable prices in AZ range from $18,995 to $75,000. Similar vehicles spend an average of 53 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in AZ
8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: Base — compare trims below)
2019 GMC Sierra 1500
Base
Mesa, AZ
2021 GMC Sierra 1500
Base
Avondale, AZ
2020 GMC Sierra 1500
SLT
Glendale, AZ
2019 GMC Sierra 1500
AT4
Phoenix, AZ
2020 GMC Sierra 1500
AT4
Scottsdale, AZ
2021 GMC Sierra 1500
AT4
Phoenix, AZ
2021 GMC Sierra 1500
SLE
Tucson, AZ
2021 GMC Sierra 1500
Elevation
Phoenix, AZ