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AutosXchange market data

2021 GMC Sierra 3500HD prices & market data

What dealers are asking for the 2021 GMC Sierra 3500HD right now, from 5 current listings at 5 dealerships across 5 states.

Asking prices of current listings · AutosXchange live dealer listings, November 5, 2026 · not sold prices

5Listings for sale now
$50,999Median asking price
$38,098–$57,595Typical range (10th–90th percentile)
99,369Median miles (5 listings with odometer)
5Dealerships listing it
See 2021 GMC Sierra 3500HD listingsAll GMC Sierra 3500HD yearsOther GMC models
Price distribution

2021 GMC Sierra 3500HD: how asking prices are spread

Half of listings ask between $44,995 and $56,995; the most common band is $32,500–$35,000 (1 listing).

2021 GMC Sierra 3500HD asking price distributionHistogram of 5 current 2021 GMC Sierra 3500HD asking prices in 11 bins of $2,500; median $50,999.00111$32.5k–$35k: 1 listing$35k–$37.5k: 0 listings$37.5k–$40k: 0 listings$40k–$42.5k: 0 listings$42.5k–$45k: 1 listing$45k–$47.5k: 0 listings$47.5k–$50k: 0 listings$50k–$52.5k: 1 listing$52.5k–$55k: 0 listings$55k–$57.5k: 1 listing$57.5k–$60k: 1 listing$32.5k$37.5k$42.5k$47.5k$52.5k$57.5k$60kMedian $50,999Asking price (bar height = number of listings)
Bars count listings in $2,500 price bands; the dashed line marks the median.
Where they are listed

2021 GMC Sierra 3500HD: listings by state

Alabama has the most, with 1 listing (20% of 5).

2021 GMC Sierra 3500HD listings by stateNumber of current 2021 GMC Sierra 3500HD listings by dealer state: Alabama 1, North Carolina 1, Oklahoma 1, Rhode Island 1, Texas 1.AlabamaAlabama: 1 · 20%1 · 20%North CarolinaNorth Carolina: 1 · 20%1 · 20%OklahomaOklahoma: 1 · 20%1 · 20%Rhode IslandRhode Island: 1 · 20%1 · 20%TexasTexas: 1 · 20%1 · 20%
Counts current AutosXchange listings by the selling dealer's state (5 states in total).
Current listings

2021 GMC Sierra 3500HD for sale now: best value first

2021 GMC Sierra 3500HD for sale in San Marcos, TX30% below similar
2021 GMC Sierra 3500HD$33,500158,247 mi · San Marcos, TXThe Trading Post
2021 GMC Sierra 3500HD for sale in Collinsville, OK6% below similar
2021 GMC Sierra 3500HD$44,995166,000 mi · Collinsville, OKRatts Auto Sales
2021 GMC Sierra 3500HD SLT for sale in Cranston, RI
2021 GMC Sierra 3500HD SLT$50,99952,080 mi · Cranston, RIThe Car Lot Inc
2021 GMC Sierra 3500HD for sale in Stokesdale, NC
2021 GMC Sierra 3500HD$56,99599,369 mi · Stokesdale, NCPriority One Auto Sales
2021 GMC Sierra 3500HD 3500 DENALI for sale in Cullman, AL
2021 GMC Sierra 3500HD 3500 DENALI$57,99590,402 mi · Cullman, ALBilly Ray Taylor Auto Sales
See all 5 2021 GMC Sierra 3500HD 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 3500HD 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

2021 GMC Sierra 3500HD for sale by city

FAQ

Frequently asked questions

What is the average asking price of a 2021 GMC Sierra 3500HD?
Across 5 current listings on AutosXchange, the median asking price of a 2021 GMC Sierra 3500HD is $50,999. Most listings (10th to 90th percentile) ask between $38,098 and $57,595. These are dealer asking prices, not sold prices.
How many GMC Sierra 3500HD are for sale?
AutosXchange currently lists 5 vehicles from 5 dealerships in 5 states.
What mileage is typical for a 2021 GMC Sierra 3500HD?
The median odometer reading is 99,369 miles; the middle half of listings show between 90,402 and 158,247 miles (5 listings with a published odometer).
What is a fair asking price for a 2021 GMC Sierra 3500HD?
Half of current listings ask between $44,995 and $56,995 (25th to 75th percentile), around a median of $50,999. 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 3500HD for sale?
Alabama has the most current listings (1), followed by North Carolina (1).

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.