Vehicle Details
2021 GMC Sierra 1500
Base
Smyrna, DE 19977
Is this 2021 GMC Sierra 1500 Base a good deal?
OAV verdict: Unscored
Why: Listed at $28,977, comparable market range $28,977–$28,977. Days on lot: 160 days (market average 47 days).
Market price position
$28,977 · only listing at this price
- Regional range
- $28,977 (0 listings)
- vs. market
- Exact match — no spread
- Comparable vehicles
- 0
Similar vehicles recently sold in an estimated 11–46 days.
What does Demand-Verified mean?
- This listing has been on market about 3.5x longer than typical for similar vehicles (cohort sells in 11–46 days; this one is at 160). 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.
Colonial Motors Smyrna
Smyrna, DE
OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.
Request availability and out-the-door price
OAV will route your inquiry to Colonial Motors Smyrna for current availability of this 2021 GMC Sierra 1500 Base 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, 2026Listed by an independent dealer in Smyrna, DE · On lot for 160 days · VIN verifiable at NHTSA
This used 2021 GMC Sierra 1500 Base is listed at $28,977 by colonial motors smyrna in Smyrna, DE 19977. It has 64,812 miles on the odometer. The exterior color is Blue. 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 available similar vehicles in the Smyrna market, the estimated market range is $28,977 to $28,977.
This vehicle has been on the lot for 160 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 Smyrna, DE 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 Smyrna, DE, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTU9AEF2MZ144788 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 DE
Comparable Vehicles
156
Average Price
$39,627
Price Range
$24,612–$61,794
Avg Days on Lot
47
Based on 156 comparable 2019-2023 GMC Sierra 1500 listings in DE, the average asking price is $39,627. This listing at $28,977 is $10,650 below average (27% below market). Comparable prices in DE range from $24,612 to $61,794. Similar vehicles spend an average of 47 days on dealer lots in this market.
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