Vehicle Details
2021 GMC Sierra 1500
SLT
Orland Park, IL 60467
Market price position
$34,795 · within market range
- Regional range
- $27,386 – $43,360
- vs. market
- $7,409 above low · $8,565 below high
- Comparable vehicles
- 31
Similar vehicles recently sold in an estimated 18–72 days.
- This listing has been on market about 3.1x longer than typical for similar vehicles (cohort sells in 18–72 days; this one is at 225). Long days-on-lot on a fast-turn cohort can signal title concerns, mechanical issues, or pricing the dealer won't actually honor. Recommend a vehicle history report before spending more time.
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
Orland Park, IL
This dealer is not yet on OAV
Request a connection and we'll notify the dealer you're interested
About This 2021 GMC Sierra 1500
Listing updated: Apr 27, 2026Listed by a franchise dealer in Orland Park, IL · On lot for 225 days · VIN verifiable at NHTSA
This used 2021 GMC Sierra 1500 SLT is listed at $34,795 by a franchise dealer in Orland Park, IL 60467. It has 43,990 miles on the odometer. The exterior color is Gray. It features a RWD 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 31 similar vehicles in the Orland Park market, the estimated market range is $27,386 to $43,360.
This vehicle has been on the lot for 225 days.
Analysis powered by OAV's patented inventory standardization technology (U.S. Patent No. 12,236,477).
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.
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 Orland Park, IL, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network. The VIN 1GTP8DED1MZ305521 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 IL
Comparable Vehicles
1,104
Average Price
$39,372
Price Range
$16,495–$62,995
Avg Days on Lot
60
Based on 1,104 comparable 2019-2023 GMC Sierra 1500 listings in IL, the average asking price is $39,372. This listing at $34,795 is $4,577 below average (12% below market). Comparable prices in IL range from $16,495 to $62,995. Similar vehicles spend an average of 60 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in IL
8 comparable vehicles with similar year and mileage
2019 GMC Sierra 1500
Des Plaines, IL
2021 GMC Sierra 1500
Countryside, IL
2019 GMC Sierra 1500
Summit, IL
2021 GMC Sierra 1500
Petersburg, IL
2020 GMC Sierra 1500
Gurnee, IL
2021 GMC Sierra 1500
Marion, IL
2021 GMC Sierra 1500
Belvidere, IL
2021 GMC Sierra 1500
Morrison, IL