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AutosXchange market data

2018 GMC Sierra 2500HD prices & market data

What dealers are asking for the 2018 GMC Sierra 2500HD right now, from 32 current listings at 30 dealerships across 15 states.

Asking prices of current listings · AutosXchange live dealer listings, November 6, 2026 · not sold prices

32Listings for sale now
$40,010Median asking price
$23,505–$47,899Typical range (10th–90th percentile)
136,213Median miles (32 listings with odometer)
30Dealerships listing it
See 2018 GMC Sierra 2500HD listingsAll GMC Sierra 2500HD yearsOther GMC models
Price vs. mileage

2018 GMC Sierra 2500HD: asking price vs. mileage

On the trend line, every 10,000 more miles goes with about $1,030 lower asking price.

2018 GMC Sierra 2500HD asking price vs. mileageScatter of 29 current 2018 GMC Sierra 2500HD listings (asking price against odometer miles), with a least-squares trend line of about $-1,030 per 10,000 miles.$15k$20k$25k$30k$35k$40k$45k$50k050k100k150k200k250kOdometer (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 $32,745 and $45,156; the most common band is $40,000–$45,000 (8 listings).

2018 GMC Sierra 2500HD asking price distributionHistogram of 32 current 2018 GMC Sierra 2500HD asking prices in 10 bins of $5,000; median $40,010.02468$10k–$15k: 1 listing$15k–$20k: 1 listing$20k–$25k: 2 listings$25k–$30k: 1 listing$30k–$35k: 5 listings$35k–$40k: 6 listings$40k–$45k: 8 listings$45k–$50k: 7 listings$50k–$55k: 0 listings$55k–$60k: 1 listing$10k$20k$30k$40k$50k$60kMedian $40,010Asking price (bar height = number of listings)
Bars count listings in $5,000 price bands; the dashed line marks the median.
Where they are listed

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

Texas has the most, with 9 listings (28% of 32).

2018 GMC Sierra 2500HD listings by stateNumber of current 2018 GMC Sierra 2500HD listings by dealer state: Texas 9, Indiana 4, California 2, Colorado 2, Georgia 2, North Carolina 2, Tennessee 2, Virginia 2, Alabama 1, Kentucky 1.TexasTexas: 9 · 28%9 · 28%IndianaIndiana: 4 · 13%4 · 13%CaliforniaCalifornia: 2 · 6%2 · 6%ColoradoColorado: 2 · 6%2 · 6%GeorgiaGeorgia: 2 · 6%2 · 6%North CarolinaNorth Carolina: 2 · 6%2 · 6%TennesseeTennessee: 2 · 6%2 · 6%VirginiaVirginia: 2 · 6%2 · 6%AlabamaAlabama: 1 · 3%1 · 3%KentuckyKentucky: 1 · 3%1 · 3%
Counts current AutosXchange listings by the selling dealer's state (15 states in total).
Current listings

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

2018 GMC Sierra 2500HD for sale in Hawley, TX37% below similar
2018 GMC Sierra 2500HD$22,300218,406 mi · Hawley, TX277 Motors
2018 GMC Sierra 2500HD SLE for sale in Decatur, IN35% below similar
2018 GMC Sierra 2500HD SLE$22,900155,498 mi · Decatur, INJohnson's Auto Sales Inc.
2018 GMC Sierra 2500HD 4WD Crew Cab 167.7" for sale in Amarillo, TX18% below similar
2018 GMC Sierra 2500HD 4WD Crew Cab 167.7"$28,950156,681 mi · Amarillo, TXBeauchamp Motors
2018 GMC Sierra 2500HD for sale in Milledgeville, GA14% below similar
2018 GMC Sierra 2500HD$30,595270,670 mi · Milledgeville, GABeckham's Used Cars
2018 GMC Sierra 2500HD SLE Crew Cab 4WD for sale in Amarillo, TX10% below similar
2018 GMC Sierra 2500HD SLE Crew Cab 4WD$31,79593,775 mi · Amarillo, TXTop of Texas Motors
2018 GMC Sierra 2500HD for sale in Warrenton, VA10% below similar
2018 GMC Sierra 2500HD$31,995186,603 mi · Warrenton, VAJNM Auto Group
2018 GMC Sierra 2500HD SLT for sale in Detroit, MI7% below similar
2018 GMC Sierra 2500HD SLT$32,995151,969 mi · Detroit, MIPopas Auto Sales
2018 GMC Sierra 2500HD 4WD Crew Cab SLT DIESEL for sale in Granbury, TX
2018 GMC Sierra 2500HD 4WD Crew Cab SLT DIESEL$34,900155,835 mi · Granbury, TXCRAIGS AUTO SALES
2018 GMC Sierra 2500HD SLT for sale in Dickinson, TX
2018 GMC Sierra 2500HD SLT$35,995243,241 mi · Dickinson, TXTexas Truck Sales
2018 GMC Sierra 2500HD SLT for sale in Colorado Springs, CO
2018 GMC Sierra 2500HD SLT$36,299142,885 mi · Colorado Springs, COCorwin Toyota Colorado Springs
2018 GMC Sierra 2500HD SLT 4WD Duramax for sale in Midlothian, TX
2018 GMC Sierra 2500HD SLT 4WD Duramax$36,995128,684 mi · Midlothian, TXSilver Star Motors
2018 GMC Sierra 2500HD for sale in Fort Wayne, IN
2018 GMC Sierra 2500HD$38,000178,428 mi · Fort Wayne, INXPS MOTORSPORTS
2018 GMC Sierra 2500HD for sale in Fort Wayne, IN
2018 GMC Sierra 2500HD$39,500148,719 mi · Fort Wayne, INXPS MOTORSPORTS
2018 GMC Sierra 2500HD Denali 4X4 for sale in Bedford, VA
2018 GMC Sierra 2500HD Denali 4X4$39,79550,874 mi · Bedford, VAEast Coast Auto Source
2018 GMC Sierra 2500HD Denali w/Pluspkg for sale in Mckinney, TX
2018 GMC Sierra 2500HD Denali w/Pluspkg$40,224134,734 mi · Mckinney, TXNissan of McKinney
2018 GMC Sierra 2500HD SLT for sale in Butler, PA
2018 GMC Sierra 2500HD SLT$40,99594,604 mi · Butler, PAPenn King Auto Sales LLC
2018 GMC Sierra 2500HD SLT Crew Cab*4X4*Tow Package*Rear Camera*Z71* Truck for sale in Fair Oaks, CA
2018 GMC Sierra 2500HD SLT Crew Cab*4X4*Tow Package*Rear Camera*Z71* Truck$40,999110,959 mi · Fair Oaks, CASupreme Auto
2018 GMC Sierra 2500HD Denali Crew Cab 4WD for sale in Inwood, WV
2018 GMC Sierra 2500HD Denali Crew Cab 4WD$41,995141,337 mi · Inwood, WVFamily Auto Sales
2018 GMC Sierra 2500HD SLT for sale in Franktown, CO
2018 GMC Sierra 2500HD SLT$42,75092,772 mi · Franktown, COSterling Auto Sales
2018 GMC Sierra 2500HD for sale in White Pine, TN
2018 GMC Sierra 2500HD$42,990109,351 mi · White Pine, TNRidley Auto Sales, Inc.
2018 GMC Sierra 2500HD Denali for sale in Lincoln, NE
2018 GMC Sierra 2500HD Denali$42,99957,766 mi · Lincoln, NE74 AUTO SALE LLC
2018 GMC Sierra 2500HD Denali for sale in Knoxville, TN
2018 GMC Sierra 2500HD Denali$44,878110,163 mi · Knoxville, TNOle Ben Diesel
2018 GMC Sierra 2500HD Denali CREW CAB 4X4 W/ UPGRADES / ALLISON / LOADED for sale in Austin, TX
2018 GMC Sierra 2500HD Denali CREW CAB 4X4 W/ UPGRADES / ALLISON / LOADED$45,991101,020 mi · Austin, TXRocky Mountain Truck Stop Austin
2018 GMC Sierra 2500HD for sale in Stokesdale, NC
2018 GMC Sierra 2500HD$45,995150,274 mi · Stokesdale, NCPriority One Auto Sales
See all 32 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.
By model year

GMC Sierra 2500HD market data by model year

Listings and median asking price per model year. Pages for years with fewer than 5 listings show the listings only.
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 32 current listings on AutosXchange, the median asking price of a 2018 GMC Sierra 2500HD is $40,010. Most listings (10th to 90th percentile) ask between $23,505 and $47,899. These are dealer asking prices, not sold prices.
How many GMC Sierra 2500HD are for sale?
AutosXchange currently lists 32 vehicles from 30 dealerships in 15 states.
What mileage is typical for a 2018 GMC Sierra 2500HD?
The median odometer reading is 136,213 miles; the middle half of listings show between 94,397 and 156,047 miles (32 listings with a published odometer).
What is a fair asking price for a 2018 GMC Sierra 2500HD?
Half of current listings ask between $32,745 and $45,156 (25th to 75th percentile), around a median of $40,010. 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?
Texas has the most current listings (9), followed by Indiana (4).

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.