GMC C6 prices
That's the median of 39 active 2018 dealer listings. 2018 is the only C6 model year with enough live inventory to price right now.
◷ Updated September 9, 2026 ▤ National asking prices, refreshed daily
2018 GMC C6 price spread
The bar spans the middle half of asking prices across 39 active 2018 listings; the tick marks the median. Open the year for trim, mileage and state detail.
Bars use the 25th–75th percentile of live dealer asking prices, excluding the top and bottom 2% to reduce extreme values; this does not verify title status or condition. National figures, updated September 9, 2026.
GMC C6 engines and factory builds
Every GMC C6 left the factory as one of a few thousand decoded configurations. These pages break them down by engine and by build sheet — the exact specification behind a VIN, not a trim name.
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Typical asking price of each model's newest year we can price; the count covers every model year. All GMC prices →
Similar GMC models
Explore more GMC models and compare their asking prices by year.
Live GMC C6 listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Each delta compares the asking price against the median for that car's own model year.
GMC C6 prices: common questions
How much does a GMC C6 cost?
As of September 9, 2026, the typical asking price for a 2018 GMC C6 is $22,637, based on 39 active dealer listings. Across every model year we can price (2018) we track 39 active listings.
Why do 2018 GMC C6 prices range from $15,020 to $26,826?
The spread comes down to configuration and mileage: higher-mileage, base-configuration examples sit near the low end, while low-mileage and premium configurations reach the top. Half of all 2018 listings fall between $20,750 and $24,180.
How current are these prices?
They come from 39 listings that were active on dealer sites when we last refreshed this page, September 9, 2026. We exclude the top and bottom 2% of prices to reduce the influence of extreme values. This does not verify vehicle condition. These are dealer asking prices, not final sale prices, and exclude taxes and fees.
Shopping for this car?
Check individual VINs before you buy — decode the exact trim and mileage, see every active listing, and how each price compares to the local market.