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

2021 GMC Sierra 1500 AT4

2021 GMC Sierra 1500View this vehicle at direct car buying →

Vehicle Details

VIN1GTP9EED4MZ367076
TrimAT4
Exterior ColorBlack
Drivetrain4WD
Engine5.3L V8
TransmissionAutomatic
Fuel TypeUnleaded
Inventory Typeused
Days on Lot153

AT4

Fair Price
$37,15162,651 mi

Sterling, VA 20166

Is this 2021 GMC Sierra 1500 AT4 a good deal?

OAV verdict: Fair Price

Why: Listed at $37,151, comparable market range $28,995–$43,339, based on 24 comparable listings. Listed 153 days.

Market price position

$37,151 · within market range

Comparable range
$28,995 – $43,339
vs. market
$8,156 above low · $6,188 below high
Comparable vehicles
24

Market Retail Price (MRP™)

$36,167

This vehicle $37,151 · $984 (3%) above MRP

MRP™ is the midpoint of the comparable market range — the representative price the market is asking for similar vehicles. How MRP works.

True Retail Value (TRV™)

$39,933

This vehicle $37,151 · $2,782 (7%) below TRV

TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-09-01) — an estimate, not an appraisal. How TRV works.

Comparable vehicles nationally recently sold in an estimated 1457 days.

Verify before inquiring
  • This listing has been available about 2.7x longer than comparable vehicles typically take to sell (cohort sells in 14–57 days; this one is at 153). Confirm its history, condition, availability, and out-the-door price before proceeding.

Market Breakdown

Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges are rebuilt from the market snapshot shown above.

Local Range$36,986 – $36,986
Regional Range$28,995 – $43,339

Direct Car Buying

Sterling, VA

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About This 2021 GMC Sierra 1500

Listing updated: Sep 1, 2026

Listed by an independent dealer in Sterling, VA · On lot for 153 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 1500 AT4 is listed at $37,151 by direct car buying in Sterling, VA 20166. It has 62,651 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Black. It features a 4WD drivetrain with a 5.3L V8 engine and Automatic transmission.

OAV's independent, evidence-backed Price-to-Market analysis rates this vehicle as Fair Price — priced in line with the supported comparable range. Based on 24 comparable listings matched to this vehicle, the estimated market range is $28,995 to $43,339. These comparisons match year, make, and model, using trim where trim data supports it. OAV does not adjust comparables for odometer — where mileage would distort a verdict, it withholds one instead.

This vehicle has been on the lot for 153 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 Sterling, VA trucks market analysis. OAV compares vehicles by local and regional price-to-market ranges and comparable count; days-on-lot and demand signals are shown separately, not as verdict inputs.

How this deal is rated

OAV compares this 2021 GMC Sierra 1500 against similar vehicles currently available for sale — same make, model, and year range, using trim where trim data supports it. OAV does not adjust comparables for odometer; on very high-mileage vehicles it withholds a verdict rather than overstate a discount the odometer explains. Based on where this listing falls in that comparable set, it is rated:

  • Great Deal — priced below the comparable-range floor by a meaningful margin (OAV's minimum-gap rule); a listing below the floor by less than that margin is Fair Price.
  • 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 can surface additional verification signals, but commercial participation never changes a listing's Price-to-Market verdict, eligibility, ranking, or confidence.

How this listing is verified

This vehicle listing was aggregated from an independent dealer in Sterling, VA, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTP9EED4MZ367076 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 processed daily; Price-to-Market analysis uses comparable vehicles.

2021 GMC Sierra 1500 Market in VA

VA Market Listings

196

Average Price

$38,436

Price Range

$27,988–$49,472

Avg Days on Lot

88

Based on all 196 2019-2023 GMC Sierra 1500 listings in the VA market, the average asking price is $38,436. This listing at $37,151 is $1,285 below the broader VA average (3% below the VA average). This is a wider, all-trim comparison across VA; OAV's price verdict above uses the closer comparable set. Comparable prices in VA range from $27,988 to $49,472. Similar vehicles spend an average of 88 days on dealer lots in this market.

Similar GMC Sierra 1500 Listings in VA

8 similar listings shown (closest matches within ±2 model years) and ±30,000 miles (subject trim: AT4 — compare trims below)