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

VIN1GTP8DED4LZ289328
TrimSLT
Exterior ColorWhite
DrivetrainRWD
Engine5.3L V8
TransmissionAutomatic
Fuel TypeUnleaded
Inventory Typeused
Days on Lot91

2020 GMC Sierra 1500

SLT

Unscored
$26,900119,089 mi

Summerville, SC 29485

Is this 2020 GMC Sierra 1500 SLT a good deal?

OAV verdict: Unscored

Why: Listed at $26,900, comparable market range $36,600–$36,699, based on 3 comparable listings. Days on lot: 91 days (market average 45 days).

Market price position

36,600
36,699
26,900

$26,900 · $9,700 below market low

$36,600$36,699 comparable
Regional range
$36,600 – $36,699
vs. market low
— $9,700 (27% below)
Comparable vehicles
3
Demand-Verified· Backed by recent sales data

Similar vehicles recently sold in an estimated 1457 days.

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$36,600 – $36,699
Regional Range$28,141 – $42,638

Truauto

Summerville, SC

OAV routes your inquiry; pricing, taxes, fees, and availability come from the dealer.

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Request availability and out-the-door price

OAV will route your inquiry to Truauto for current availability of this 2020 GMC Sierra 1500 SLT 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 2020 GMC Sierra 1500

Listing updated: Jun 12, 2026

Listed by an independent dealer in Summerville, SC · On lot for 91 days · VIN verifiable at NHTSA

This used 2020 GMC Sierra 1500 SLT is listed at $26,900 by truauto in Summerville, SC 29485. It has 119,089 miles on the odometer. The exterior color is White. 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 Unscored due to insufficient comparable data. Based on 3 similar vehicles in the Summerville market, the estimated market range is $36,600 to $36,699. The local market range in SC is $36,600 to $36,699.

This vehicle has been on the lot for 91 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 Summerville, SC 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 2020 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:

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 Summerville, SC, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 1GTP8DED4LZ289328 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.

2020 GMC Sierra 1500 Market in SC

Comparable Vehicles

851

Average Price

$36,678

Price Range

$10,650–$60,737

Avg Days on Lot

45

Based on 851 comparable 2018-2022 GMC Sierra 1500 listings in SC, the average asking price is $36,678. This listing at $26,900 is $9,778 below average (27% below market). Comparable prices in SC range from $10,650 to $60,737. Similar vehicles spend an average of 45 days on dealer lots in this market.

Similar GMC Sierra 1500 Listings in SC

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