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

VIN1GTP9EED3LZ182001
TrimAT4
Exterior ColorGray
Drivetrain4WD
Engine5.3L V8
TransmissionAutomatic
Fuel TypeUnleaded
Inventory Typeused
Days on Lot15

2020 GMC Sierra 1500

AT4

Fair Price
$36,37282,684 mi

Collinsville, IL 62234

Is this 2020 GMC Sierra 1500 AT4 a good deal?

OAV verdict: Fair Price

Why: Listed at $36,372, comparable market range $28,977–$42,700, based on 29 comparable listings. Days on lot: 15 days (market average 57 days).

Market price position

28,977
42,700
36,372

$36,372 · within market range

$28,977comparable$42,700
Regional range
$28,977 – $42,700
vs. market
$7,395 above low · $6,328 below high
Comparable vehicles
29
Demand-Verified· Backed by recent sales data

Similar vehicles recently sold in an estimated 1665 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$28,977 – $42,700

Dealer Info

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Collinsville, IL

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About This 2020 GMC Sierra 1500

Listing updated: May 22, 2026

Listed by a franchise dealer in Collinsville, IL · On lot for 15 days · VIN verifiable at NHTSA

This used 2020 GMC Sierra 1500 AT4 is listed at $36,372 by a franchise dealer in Collinsville, IL 62234. It has 82,684 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 Fair Price — priced at market value. Based on 29 similar vehicles in the Collinsville market, the estimated market range is $28,977 to $42,700.

This vehicle has been on the lot for 15 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 Collinsville, IL 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 2020 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 Collinsville, IL, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTP9EED3LZ182001 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.

2020 GMC Sierra 1500 Market in IL

Comparable Vehicles

921

Average Price

$35,237

Price Range

$16,495–$58,947

Avg Days on Lot

57

Based on 921 comparable 2018-2022 GMC Sierra 1500 listings in IL, the average asking price is $35,237. This listing at $36,372 is $1,135 above average (3% above market). Comparable prices in IL range from $16,495 to $58,947. Similar vehicles spend an average of 57 days on dealer lots in this market.

Similar GMC Sierra 1500 Listings in IL

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