U.S. Patent No. 12,236,477 — Patented Automotive Data Standardization Technology · Patent Pending for Additional Innovations
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2021 GMC Sierra 1500

Vehicle Details

VIN1GTU9DET0MZ141900
TrimSLT
Exterior ColorGray
Drivetrain4WD
Engine3.0L I6
TransmissionAutomatic
Fuel TypeDiesel
Inventory Typeused
MSRP$39,750
Days on Lot13
Days on Market62

2021 GMC Sierra 1500

SLT

Overpriced
$39,75088,923 miles

Myrtle Beach, SC 29579

Market price position

34,044
39,500
39,750

$39,750 · $250 above market high

$34,044comparable$39,500
Regional range
$34,044 – $39,500
vs. market high
+ $250 (1% above)
Comparable vehicles
4

Market Breakdown

Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges refresh daily.

Local Range$34,044 – $39,500
Regional Range$28,888 – $41,900

Dealer Info

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Myrtle Beach, SC

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About This 2021 GMC Sierra 1500

Listing updated: Apr 24, 2026

Listed by a franchise dealer in Myrtle Beach, SC · On lot for 13 days · VIN verifiable at NHTSA

This used 2021 GMC Sierra 1500 SLT is listed at $39,750 by a franchise dealer in Myrtle Beach, SC 29579. It has 88,923 miles on the odometer. The exterior color is Gray. It features a 4WD drivetrain with a 3.0L I6 engine and Automatic transmission.

OAV's AI-powered Price-to-Market analysis rates this vehicle as Overpriced — priced above market value. Based on 4 similar vehicles in the Myrtle Beach market, the estimated market range is $34,044 to $39,500. The local market range in SC is $34,044 to $39,500.

This vehicle has been on the lot for 13 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:

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 Myrtle Beach, SC, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network. The VIN 1GTU9DET0MZ141900 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 SC

Comparable Vehicles

1,410

Average Price

$42,731

Price Range

$14,000–$69,024

Avg Days on Lot

39

Based on 1,410 comparable 2019-2023 GMC Sierra 1500 listings in SC, the average asking price is $42,731. This listing at $39,750 is $2,981 below average (7% below market). Comparable prices in SC range from $14,000 to $69,024. Similar vehicles spend an average of 39 days on dealer lots in this market.

Similar GMC Sierra 1500 Listings in SC

8 comparable vehicles with similar year and mileage