Used 2018 GMC Heavy Conventional Price in the US
A used 2018 GMC Heavy Conventional in the US typically lists for $20,995–$25,998, with a median asking price of $22,998 across 53 active US dealer listings (as of 2026-08-30). The cheapest one listed right now is $15,995, a 2018 108 In BBC in Clearwater, FL — below 95% of the market, so expect an older model year, a base trim or high mileage.
- Typical range
- $20,995 – $25,998
- Median
- $22,998
- Cheapest 5%
- under $17,300
- Cheapest listed now
- $15,995
Browse by model year
cheapest per yearCheapest 10 listed right now
ranked by price-
$15,9952018 GMC Heavy Conventional 108 In BBC200,434 mi · Clearwater, FL · PJ's Auto WorldView listing → -
$16,9882018 GMC Heavy Conventional 92 5 In113,856 mi · Sheffield, MA · Bachetti's Auto SalesView listing →
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$16,9992018 GMC Heavy Conventional 108 In BBC106,385 mi · Toledo, OH · City Wide Auto Credit - WestView listing →
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$17,5002018 GMC Heavy Conventional 108 In BBC100,405 mi · Milwaukee, WI · Auto WisconsinView listing →
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$17,9812018 GMC Heavy Conventional 108 In BBC125,362 mi · Miami, FL · AUTO DIRECT OF MIAMIView listing → -
$18,4912018 GMC Heavy Conventional 108 In BBC113,074 mi · Paterson, NJ · Straight Motor SalesView listing → -
$18,7982018 GMC Heavy Conventional 92 5 In116,164 mi · Bellevue, NE · GREENLINE MOTORS LLCView listing →
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$18,9002018 GMC Heavy Conventional 108 In BBC150,499 mi · Lafayette, IN · Momax Auto SalesView listing → -
$19,4982018 GMC Heavy Conventional 108 In BBC112,006 mi · Reidsville, NC · Walkers AutoView listing → -
$19,5002018 GMC Heavy Conventional 92 5 In111,843 mi · Marietta, OH · Putnam Auto Sales IncView listing →
These are the bottom of the market, not the going rate — every one is priced below 95% of active listings. A typical used 2018 GMC Heavy Conventional asks $20,995–$25,998. 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 2018 GMC Heavy Conventional cost?
A used 2018 GMC Heavy Conventional in the US typically lists for $20,995 to $25,998, with a median asking price of $22,998 across 53 active US dealer listings. Nine in ten are priced between $17,300 and $30,394 (as of 2026-08-30, source: UnderMarket Cars).
Is $23,000 a good price for a used 2018 GMC Heavy Conventional?
That sits at about the market median ($22,998) for a used 2018 GMC Heavy Conventional. Under $20,995 puts you in the cheapest quarter of active US listings and under $17,300 in the cheapest 5%; above $30,394 is the priciest 5% (as of 2026-08-30).
What is the cheapest used 2018 GMC Heavy Conventional for sale right now?
$15,995 — a 2018 GMC Heavy Conventional 108 In BBC in Clearwater, FL, $7,003 under the median (as of 2026-08-30).
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 2018 GMC Heavy Conventional price page at least twice a day. The data date shown on this page is 2026-08-30.
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Prices updated 2026-08-30. Data covers active dealer listings across the USA.