2020 GMC Sierra 1500 SLE
View this vehicle at best auburn →Vehicle Details
SLE
Auburn, IN 46706
Is this 2020 GMC Sierra 1500 SLE a good deal?
OAV verdict: Great Deal
Why: Listed at $26,245, comparable market range $27,780–$33,374, based on 12 comparable listings. Listed 7 days · fresher than most comparable local listings (typical ~15–60 days).
Market price position
$26,245 · $1,535 below market low
- Comparable range
- $27,780 – $33,374
- vs. market low
- — $1,535 (6% below)
- Comparable vehicles
- 12
Market Retail Price (MRP™)
$30,577This vehicle $26,245 · $4,332 (14%) below 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™)
$26,749This vehicle $26,245 · $504 (2%) below TRV
TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-08-29) — an estimate, not an appraisal. How TRV works.
Comparable vehicles nationally recently sold in an estimated 10–41 days, and this listing is still within that typical selling window.
What does Demand-Verified mean?
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.
Best Auburn
Auburn, IN
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 Best Auburn for current availability of this 2020 GMC Sierra 1500 SLE 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: Aug 29, 2026Listed by an independent dealer in Auburn, IN · On lot for 7 days · VIN verifiable at NHTSA
This used 2020 GMC Sierra 1500 SLE is listed at $26,245 by best auburn in Auburn, IN 46706. It has 106,149 miles on the odometer (dealer-reported, not independently verified by OAV). The exterior color is Silver. It features a 4WD drivetrain with a 2.7L I4 engine and Automatic transmission.
OAV's independent, evidence-backed Price-to-Market analysis rates this vehicle as a Great Deal — priced below market value. Based on 12 comparable listings matched to this vehicle, the estimated market range is $27,780 to $33,374. These comparisons match year, make, model, and market, 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 7 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 Auburn, IN 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 2020 GMC Sierra 1500 against similar vehicles currently available in the local and regional market — 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 Auburn, IN, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GTP9BEK5LG398204 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 within the same geographic market.
2020 GMC Sierra 1500 Market in IN
IN Market Listings
255
Average Price
$32,256
Price Range
$23,986–$41,971
Avg Days on Lot
66
Based on all 255 2018-2022 GMC Sierra 1500 listings in the IN market, the average asking price is $32,256. This listing at $26,245 is $6,011 below the broader IN average (19% below the IN average). This is a wider, all-trim comparison across IN; OAV's price verdict above uses the closer comparable set. Comparable prices in IN range from $23,986 to $41,971. Similar vehicles spend an average of 66 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in IN
8 similar listings shown (closest matches within ±2 model years) and ±30,000 miles (subject trim: SLE — compare trims below)
2018 GMC Sierra 1500
SLE
Hammond, IN
2018 GMC Sierra 1500
SLE
Plainfield, IN
2018 GMC Sierra 1500
SLE
Terre Haute, IN
2018 GMC Sierra 1500
SLE
Kokomo, IN
2019 GMC Sierra 1500
SLE
Indianapolis, IN
2018 GMC Sierra 1500
SLE
De Motte, IN
2019 GMC Sierra 1500
SLE
Merrillville, IN
2019 GMC Sierra 1500
Base
Westport, IN