2021 GMC Sierra 1500 Denali

Listed by a franchise dealer in Downers Grove, IL · On lot for 27 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 1500 Denali Denali is listed at $43,361 by a franchise dealer in Downers Grove, IL 60515. It has 45,209 miles on the odometer. The exterior color is Blue. It features a 4WD drivetrain with a 6.2L 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 24 similar vehicles in the Downers Grove market, the estimated market range is $31,911 to $47,313.

This vehicle has been on the lot for 27 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 Downers Grove, 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.

• View the full Downers Grove, IL trucks market →
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How this deal is rated

OAV compares this 2021 GMC Sierra 1500 Denali 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.

This rating refreshes daily as inventory enters and leaves the market. The dealer on this listing has not yet activated on OAV, so the business name and contact details are anonymized here. Activated (paying) dealers appear with their verified business name and a Verified badge.

How this listing is verified

This vehicle listing was aggregated from a franchise dealer in Downers Grove, IL, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTU9FEL1MZ450559 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 Denali Market in IL

Based on 375 comparable 2019-2023 GMC Sierra 1500 Denali listings in IL, the average asking price is $46,495. This listing at $43,361 is $3,134 below average (7% below market). Comparable prices in IL range from $26,749 to $79,145. Similar vehicles spend an average of 77 days on dealer lots in this market.

Similar GMC Sierra 1500 Denali Listings in IL

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

2019 GMC Sierra 1500 Denali

Denali

Savoy, IL

$39,98716k mi

Fair Price

2019 GMC Sierra 1500 Denali

Denali

Mattoon, IL

$37,97741k mi

Great Deal

2021 GMC Sierra 1500 Denali

Denali

Milan, IL

$40,99064k mi

Unscored

2020 GMC Sierra 1500 Denali

Denali

Springfield, IL

$42,99845k mi

Fair Price

2019 GMC Sierra 1500 Denali

Denali

Savanna, IL

$38,17870k mi

Unscored

2020 GMC Sierra 1500 Denali

Denali

Springfield, IL

$37,59575k mi

Unscored

2020 GMC Sierra 1500 Denali

Denali

Taylorville, IL

$37,59575k mi

Unscored

2020 GMC Sierra 1500 Denali

Denali

Quincy, IL

$45,53124k mi

Unscored