U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology
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Vehicle Details

VIN1GTP9EED2MZ423287
TrimAT4
Exterior ColorGray
Drivetrain4WD
Engine5.3L V8
TransmissionAutomatic
Fuel TypeUnleaded
Inventory Typeused
Days on Lot26

2021 GMC Sierra 1500

AT4

Unscored
$38,27571,600 mi

Mount Pleasant, MI 48858

Is this 2021 GMC Sierra 1500 AT4 a good deal?

OAV verdict: Unscored

Why: Listed at $38,275, comparable market range $21,995–$40,460, based on 6 comparable listings. Days on lot: 26 days (market average 58 days).

Market price position

21,995
40,460
38,275

$38,275 · within market range

$21,995comparable$40,460
Regional range
$21,995 – $40,460
vs. market
$16,280 above low · $2,185 below high
Comparable vehicles
6
Demand-Verified· Backed by recent sales data

Similar vehicles recently sold in an estimated 1554 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.

Regional Range$21,995 – $40,460

Graff Chevrolet Mt. Pleasant

Mount Pleasant, MI

OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.

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Request availability and out-the-door price

OAV will route your inquiry to Graff Chevrolet Mt. Pleasant for current availability of this 2021 GMC Sierra 1500 AT4 and an out-the-door price quote (taxes, fees, addons included).

OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.

About This 2021 GMC Sierra 1500

Listing updated: Jun 18, 2026

Listed by a franchise dealer in Mount Pleasant, MI · On lot for 26 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 1500 AT4 is listed at $38,275 by graff chevrolet mt. pleasant in Mount Pleasant, MI 48858. It has 71,600 miles on the odometer. The exterior color is Gray. It features a 4WD drivetrain with a 5.3L V8 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 Mount Pleasant market, the estimated market range is $21,995 to $40,460.

This vehicle has been on the lot for 26 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 Mount Pleasant, MI 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:

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 Mount Pleasant, MI, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTP9EED2MZ423287 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 MI

Comparable Vehicles

2,075

Average Price

$37,208

Price Range

$13,900–$74,900

Avg Days on Lot

58

Based on 2,075 comparable 2019-2023 GMC Sierra 1500 listings in MI, the average asking price is $37,208. This listing at $38,275 is $1,067 above average (3% above market). Comparable prices in MI range from $13,900 to $74,900. Similar vehicles spend an average of 58 days on dealer lots in this market.

Similar GMC Sierra 1500 Listings in MI

8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: AT4 — compare trims below)