Vehicle Details
2018 GMC Sierra 1500
Base
Greenfield, IN 46140
Is this 2018 GMC Sierra 1500 Base a good deal?
OAV verdict: Unscored
Why: Listed at $29,990, comparable market range $21,888–$21,888, based on 3 comparable listings. Days on lot: 70 days (market average 48 days).
Market price position
$29,990 · $8,102 above the market benchmark
- Regional range
- $21,888 (3 listings)
- vs. market high
- + $8,102 (37% above)
- Comparable vehicles
- 3
Market Retail Price (MRP™)
$21,888This vehicle $29,990 · $8,102 (37%) 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™)
$26,354This vehicle $29,990 · $3,636 (14%) above TRV
TRV™ is the average paid price for cars like this in the last 60 days (sold data through 2026-07-17) — an estimate, not an appraisal. How TRV works.
Similar vehicles recently sold in an estimated 18–60 days.
Market Breakdown
Local = comparable listings in the same metro. Regional = comparable listings across the broader state or multi-state region. Both ranges update continuously.
Carvana Greenfield
Greenfield, 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 Carvana Greenfield for current availability of this 2018 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 2018 GMC Sierra 1500
Listing updated: Jul 16, 2026Listed by a franchise dealer in Greenfield, IN · On lot for 70 days · VIN verifiable at NHTSA
This used 2018 GMC Sierra 1500 Base is listed at $29,990 by carvana greenfield in Greenfield, IN 46140. It has 17,445 miles on the odometer. The exterior color is Silver. It features a RWD drivetrain with a 4.3L V6 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 Greenfield market, the estimated market range is $21,888 to $21,888.
This vehicle has been on the lot for 70 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 Greenfield, IN 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 2018 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 a franchise dealer in Greenfield, IN, one of 57,000+ U.S. dealerships in OAV's nationwide inventory network.The VIN 3GTP1LEH1JG183904 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 updated continuously; Price-to-Market analysis uses comparable vehicles within the same geographic market.
2018 GMC Sierra 1500 Market in IN
Comparable Vehicles
554
Average Price
$28,994
Price Range
$5,500–$53,975
Avg Days on Lot
48
Based on 554 comparable 2016-2020 GMC Sierra 1500 listings in IN, the average asking price is $28,994. This listing at $29,990 is $996 above average (3% above market). Comparable prices in IN range from $5,500 to $53,975. Similar vehicles spend an average of 48 days on dealer lots in this market.
Similar GMC Sierra 1500 Listings in IN
8 comparable vehicles within ±2 model years and ±30,000 miles (subject trim: Base — compare trims below)
2018 GMC Sierra 1500
Base
Highland, IN
2020 GMC Sierra 1500
Base
Indianapolis, IN
2020 GMC Sierra 1500
Base
Greenfield, IN
2020 GMC Sierra 1500
SLE
Greenfield, IN
2019 GMC Sierra 1500
SLT
Merrillville, IN
2017 GMC Sierra 1500
SLE
Evansville, IN
2020 GMC Sierra 1500
SLE
Muncie, IN
2020 GMC Sierra 1500
SLT
Crawfordsville, IN