Used GMC C6 Price in the US
A used GMC C6 in the US typically lists for $20,383–$24,713, with a median asking price of $22,721 across 50 active US dealer listings (as of 2026-09-03). The cheapest one listed right now is $7,500, a 2006 in Martinsville, IN — below 95% of the market, so expect an older model year, a base trim or high mileage.
- Typical range
- $20,383 – $24,713
- Median
- $22,721
- Cheapest 5%
- under $15,620
- Cheapest listed now
- $7,500
Browse by model year
cheapest per yearCheapest 10 listed right now
ranked by price-
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$13,5002018 GMC C6 Medium Conventional 97192,559 mi · Cleveland, OH · National Car MartView listing →
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$15,3502018 GMC C6 Medium Conventional 97155,241 mi · Traverse City, MI · Jack's Auto SalesView listing → -
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$16,6812018 GMC C6 Medium Conventional 97140,443 mi · Lansing, MI · LaFontaine Ford of LansingView listing → -
$17,9952018 GMC C6 Medium Conventional 97142,309 mi · Springfield, OH · Drive Safe AutoView listing → -
$18,2452018 GMC C6 Medium Conventional 9773,639 mi · New Baltimore, MI · Car CountryView listing →
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$19,9952018 GMC C6 Medium Conventional 97119,147 mi · Louisville, KY · Cars USA 2 LLCView listing →
These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used GMC C6 asks $20,383–$24,713. Cars this far under usually carry an older model year, a base trim or high mileage.
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10 pinnedFAQ
How much does a used GMC C6 cost?
A used GMC C6 in the US typically lists for $20,383 to $24,713, with a median asking price of $22,721 across 50 active US dealer listings. Nine in ten are priced between $15,620 and $27,305 (as of 2026-09-03, source: UnderMarket Cars).
Is $23,000 a good price for a used GMC C6?
That sits at about the market median ($22,721) for a used GMC C6. Under $20,383 puts you in the cheapest quarter of active US listings and under $15,620 in the cheapest 5%; above $27,305 is the priciest 5% (as of 2026-09-03).
What is the cheapest used GMC C6 for sale right now?
$7,500 — a 2006 GMC C6 in Martinsville, IN, $15,221 under the median (as of 2026-09-03).
Are these MSRP or real asking prices?
Real asking prices from active US dealer listings, deduplicated by VIN — not manufacturer MSRP. They already reflect dealer discounts, and they exclude tax, title, registration and dealer fees.
How often are prices updated?
UnderMarket Cars refreshes US dealer listings continuously and re-generates this used GMC C6 price page at least twice a day. The data date shown on this page is 2026-09-03.
Explore more
Prices updated 2026-09-03. Data covers active dealer listings across the USA.