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2018 GMC Sierra 2500HD market value, prices & key facts

What dealers are asking for the 2018 GMC Sierra 2500HD right now, from 70 current listings at 64 dealerships across 28 states, with EPA fuel economy, NHTSA safety ratings and recalls for this model year.

Asking prices of current listings · AutosXchange live dealer listings, November 10, 2026 · not sold prices

70Listings for sale now
$36,834Median asking price
$23,335–$46,072Typical range (10th–90th percentile)
120,183Median miles (70 listings with odometer)
64Dealerships listing it
See 2018 GMC Sierra 2500HD listingsShop GMC Sierra 2500HD for saleAll GMC Sierra 2500HD yearsOther GMC models
In brief

2018 GMC Sierra 2500HD overview

AutosXchange has 70 listed now, with a median asking price of $36,834 and median 120,183 miles.

Composed only from U.S. government data (EPA, NHTSA) and current AutosXchange listings; not a review.
Market snapshot

2018 GMC Sierra 2500HD: the market right now

Half of the 70 listings ask between $30,486 and $42,561.

$30,48625th percentile asking price
$36,834Median asking price
$42,56175th percentile asking price
120,183Median miles (middle half 102,137–153,492)
2Listings with a price cut since first listed
61Cities with listings

New vs. used (by odometer)

New or demo (under 100 mi): 0Used (100+ mi): 70

Top cities by supply

2018 GMC Sierra 2500HD listings by cityGaylord, MI: 3 listings, median $38,950; Winchester, VA: 3 listings, median $43,900; Colorado Springs, CO: 2 listings, median $29,497; Fort Wayne, IN: 2 listings, median $38,750; Lapeer, MI: 2 listings, median $36,036; Derry, NH: 2 listings, median $37,900; Amarillo, TX: 2 listings, median $30,373; Harrison, AR: 1 listings, median $35,784.Gaylord, MIGaylord, MI: 3 · median $39k3 · median $39kWinchester, VAWinchester, VA: 3 · median $43.9k3 · median $43.9kColorado Springs, COColorado Springs, CO: 2 · median $29.5k2 · median $29.5kFort Wayne, INFort Wayne, IN: 2 · median $38.8k2 · median $38.8kLapeer, MILapeer, MI: 2 · median $36k2 · median $36kDerry, NHDerry, NH: 2 · median $37.9k2 · median $37.9kAmarillo, TXAmarillo, TX: 2 · median $30.4k2 · median $30.4kHarrison, ARHarrison, AR: 1 · median $35.8k1 · median $35.8k
Price cuts: listings whose current asking price is below the price first recorded by AutosXchange (0 were raised). New vs. used is read from the odometer (under 100 miles = new or demo) because most dealer feeds carry no new/used flag.
Price vs. mileage

2018 GMC Sierra 2500HD: asking price vs. mileage

On the trend line, every 10,000 more miles goes with about $930 lower asking price.

2018 GMC Sierra 2500HD asking price vs. mileageScatter of 67 current 2018 GMC Sierra 2500HD listings (asking price against odometer miles), with a least-squares trend line of about $-930 per 10,000 miles.$15k$20k$25k$30k$35k$40k$45k$50k$55k050k100k150k200k250kOdometer (miles)Asking price
Each dot is one current listing; the line is a straight least-squares fit over all of them. 3 extreme listings (top/bottom 1% of price or mileage) are outside the chart.
Price distribution

2018 GMC Sierra 2500HD: how asking prices are spread

Half of listings ask between $30,486 and $42,561; the most common band is $35,000–$37,500 (10 listings).

2018 GMC Sierra 2500HD asking price distributionHistogram of 70 current 2018 GMC Sierra 2500HD asking prices in 15 bins of $2,500; median $36,834.035810$17.5k–$20k: 2 listings (includes 1 below $17.5k)$20k–$22.5k: 2 listings$22.5k–$25k: 6 listings$25k–$27.5k: 1 listing$27.5k–$30k: 6 listings$30k–$32.5k: 6 listings$32.5k–$35k: 6 listings$35k–$37.5k: 10 listings$37.5k–$40k: 9 listings$40k–$42.5k: 4 listings$42.5k–$45k: 9 listings$45k–$47.5k: 6 listings$47.5k–$50k: 1 listing$50k–$52.5k: 1 listing$52.5k–$55k: 1 listing (includes 1 above $55k)≤$17.5k$25k$32.5k$40k$47.5k$55k+Median $36,834Asking price (bar height = number of listings)
Bars count listings in $2,500 price bands; the dashed line marks the median. The outer bars also include the lowest and highest 1% of prices.
Where they are listed

2018 GMC Sierra 2500HD: listings by state (top 10)

Michigan has the most, with 9 listings (13% of 70).

2018 GMC Sierra 2500HD listings by stateNumber of current 2018 GMC Sierra 2500HD listings by dealer state: Michigan 9, Texas 9, New Hampshire 6, Virginia 6, Colorado 5, Ohio 4, Indiana 3, Utah 3, California 2, Georgia 2.MichiganMichigan: 9 · 13%9 · 13%TexasTexas: 9 · 13%9 · 13%New HampshireNew Hampshire: 6 · 9%6 · 9%VirginiaVirginia: 6 · 9%6 · 9%ColoradoColorado: 5 · 7%5 · 7%OhioOhio: 4 · 6%4 · 6%IndianaIndiana: 3 · 4%3 · 4%UtahUtah: 3 · 4%3 · 4%CaliforniaCalifornia: 2 · 3%2 · 3%GeorgiaGeorgia: 2 · 3%2 · 3%
Counts current AutosXchange listings by the selling dealer's state (28 states in total).
By trim

2018 GMC Sierra 2500HD: listings by trim (top 3)

Denali is the most-listed trim (19 listings); Denali has the highest median asking price of these, $43,990.

2018 GMC Sierra 2500HD listings by trimDenali: 19 listings, median $43,990; SLT: 15 listings, median $36,299; SLE: 10 listings, median $23,687.DenaliDenali: 19 · median $44k19 · median $44kSLTSLT: 15 · median $36.3k15 · median $36.3kSLESLE: 10 · median $23.7k10 · median $23.7k
Trim is read from the listing title (the word after the model name), so it is approximate. Trims with fewer than 3 listings are not shown.
Current listings

2018 GMC Sierra 2500HD for sale now: best value first

See all 70 2018 GMC Sierra 2500HD listings
Sorted by how far each asking price is below the median of the same model within one model year (all current listings nationwide). Badges show listings at least 5% below that median. Listings priced under 60% of that median (often data errors or damaged vehicles) and model years with fewer than 5 comparable listings are listed after the ranked ones.

2018 GMC Sierra 2500HD (all trims): market value

Market value (30 days): $37,150, based on 88 cars for sale now and 5 recently sold. Last listed price is the final advertised price of a listing before it was removed from sale, like a stock's last traded price. Market value is the median of last listed prices (listings removed in the window) together with current asking prices.

7-day market value
$37,150
based on 88 cars for sale now and 5 recently sold
Recently sold (last listed, 7d): $48,000 · based on 5 recently soldFor sale now (asking): $37,073 · based on 88 cars for sale now
based on 6 days of tracking since Nov 5, 2026
30-day market value
$37,150
based on 88 cars for sale now and 5 recently sold
Recently sold (last listed, 30d): $48,000 · based on 5 recently soldFor sale now (asking): $37,073 · based on 88 cars for sale now
based on 6 days of tracking since Nov 5, 2026
90-day market value
$37,150
based on 88 cars for sale now and 5 recently sold
Recently sold (last listed, 90d): $48,000 · based on 5 recently soldFor sale now (asking): $37,073 · based on 88 cars for sale now
based on 6 days of tracking since Nov 5, 2026

Market value, last listed and asking prices per day

  • Market value $37,150
  • Last listed median $48,000
  • Current asking median $37,073
2018 GMC Sierra 2500HD (all trims): market value, last listed median and current asking median per day (30-day window)Nov 6: market value —, last listed —, asking $39,500; Nov 7: market value —, last listed —, asking $38,115; Nov 8: market value —, last listed —, asking $38,000; Nov 9: market value —, last listed —, asking $37,972; Nov 10: market value $37,150, last listed $48,000, asking $37,073$35k$40k$45k$50kNov 6Nov 7Nov 8Nov 9Nov 10Nov 6: market value —, last listed median —, current asking median $39,500Nov 7: market value —, last listed median —, current asking median $38,115Nov 8: market value —, last listed median —, current asking median $38,000Nov 9: market value —, last listed median —, current asking median $37,972Nov 10: market value $37,150, last listed median $48,000, current asking median $37,073

30-day window, based on 6 days of tracking since Nov 5, 2026. Latest: market value based on 88 cars for sale now and 5 recently sold. One point per day; lines are smoothed curves through the daily values.

Only verified listings count (data-integrity checks); removals from a dealer's feed or website change, and cars still listed at another dealer, are not last listed prices.

2018 GMC Sierra 2500HD: market value by trim

TrimMarket value (30 days)Last listed medianCurrent asking median
Denali Crew$44,878 · 19 prices$48,898 · n 3$43,450 · n 16
SLT$38,309 · 16 prices—$38,309 · n 16
Denali$38,000 · 13 prices—$38,000 · n 13
SLE$27,394 · 7 prices—$27,394 · n 7
SLT Crew$36,495 · 6 prices$27,500 · n 1$36,995 · n 5
2500hd SLT$40,995 · 3 prices—$40,995 · n 3
Base$32,698 · 3 prices—$32,698 · n 3

Each trim on its own: dealer-stated trims, median of last listed and current asking prices in 30 days, at least 3 prices.

2018 GMC Sierra 2500HD: retail value by area

Market value is the median of last listed prices (cars that left the market in the window) and current asking prices. Typical range = middle 80% of prices (10th to 90th percentile). Windows reach back only to Nov 5, 2026, when tracking began.

AreaMarket valuelast listed + current askingLast listedwhat it’s been pushed forCurrent askingcars for sale now
TX$36,500typical $28,325–$46,600n 10not enough data here$36,500typical $28,325–$46,600n 10
MI$35,250typical $28,450–$40,600n 9not enough data here$35,250typical $28,450–$40,600n 9
CO$36,375typical $19,875–$41,250n 6not enough data here$36,375typical $19,875–$41,250n 6
National$37,250typical $24,200–$46,950n 93$48,000typical $23,000–$49,000n 5$37,125typical $24,700–$45,300n 88
AutosXchange Intel

2018 GMC Sierra 2500HD price activity & trends

Tracked daily since Nov 5, 2026; data as of Nov 10, 10:35 AM PST. ▲ ▼ show the direction of change.

Latest market activity

5.4%of 93 listings had a price cut in 7 daysWhat this means: About 1 in 19 of the 93 2018 GMC Sierra 2500HD listings tracked had a price cut in the last 7 days.
$884average cut, 7 daysWhat this means: When a 2018 GMC Sierra 2500HD price was cut, the cut averaged $884.
—7-day price change from Nov 12
2 / 5new listings / removed from sale, 7 daysWhat this means: 3 more listings were removed than added in the last 7 days, so fewer cars are for sale than a week ago. A removed listing is not always a sale.

Since Nov 5: 5.4% of 93 listings cut (average $884), 2 new, 5 removed from sale.

Compare by location

LocationListingsMedian askingvs. nationalCut in 7 daysAvg cutSame cars, 7-day changeNew / removed 7d
United States88$37,073—5.4%$884—2 / 5
The South32$39,013▲ +5.2%8.3%$541—1 / 4

Current asking prices: median per day

What this means for you: The typical 2018 GMC Sierra 2500HD asking price fell 6.1% over the last 4 days (not seasonally adjusted).

2018 GMC Sierra 2500HD: median asking price per dayUnited States: Nov 6 $39.5k, Nov 7 $38.1k, Nov 8 $38k, Nov 9 $38k, Nov 10 $37.1k$37k$37.5k$38k$38.5k$39k$39.5kNov 6Nov 7Nov 8Nov 9Nov 10United States Nov 6: $39.5kUnited States Nov 7: $38.1kUnited States Nov 8: $38kUnited States Nov 9: $38kUnited States Nov 10: $37.1k
Market moversMarket TrendsCompare marketsData (JSON)

Method terms: "same cars" is the median asking price of the same listings on both dates (a same-store median), so changes in the mix of cars do not move it; a "model" is a model year, make and model with at least 30 listings from 5 dealers (a cohort); a "group of states" is a U.S. Census division.

Source: AutosXchange Intel Hub, autos-xchange.com/market. Asking prices of dealer listings tracked by AutosXchange since Nov 5, 2026, not sold prices; not seasonally adjusted. A market figure is published only with at least 30 listings from at least 5 dealers (no dealer above 40%). "Removed from sale" means a listing left the dealer's website; it is not a confirmed sale. Methodology
AutosXchange Intel Hub

Latest price changes: 2018 GMC Sierra 2500HD

7 cuts and 0 raises in the last 30d; median cut −1.8%.

Showing the latest 7 · scroll the list

All price changes in the AutosXchange Intel Hub →

Source: AutosXchange Intel Hub, autos-xchange.com/market, 2026-11-10.

By model year

GMC Sierra 2500HD market data by model year

Listings and median asking price per model year. Years with fewer than 5 listings link to the listings.
Shop locally

2018 GMC Sierra 2500HD for sale by city

FAQ

Frequently asked questions

What is the average asking price of a 2018 GMC Sierra 2500HD?
Across 70 current listings on AutosXchange, the median asking price of a 2018 GMC Sierra 2500HD is $36,834. Most listings (10th to 90th percentile) ask between $23,335 and $46,072. These are dealer asking prices, not sold prices.
How many GMC Sierra 2500HD are for sale?
AutosXchange currently lists 70 vehicles from 64 dealerships in 28 states.
What mileage is typical for a 2018 GMC Sierra 2500HD?
The median odometer reading is 120,183 miles; the middle half of listings show between 102,137 and 153,492 miles (70 listings with a published odometer).
What is a fair asking price for a 2018 GMC Sierra 2500HD?
Half of current listings ask between $30,486 and $42,561 (25th to 75th percentile), around a median of $36,834. Compare mileage, trim, condition and the vehicle history report before deciding; AutosXchange figures are asking prices, not sold prices.
Where are the most GMC Sierra 2500HD for sale?
Michigan has the most current listings (9), followed by Texas (9).

AutosXchange market data is calculated from the asking prices of current dealer listings on AutosXchange, refreshed as dealers update their inventory. These are not sold or transaction prices and not appraisals. Listings with an asking price under $500 (placeholder prices) are excluded. Confirm price, fees and availability with the selling dealer.