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2021 GMC Sierra 3500 market value, prices & key facts

What dealers are asking for the 2021 GMC Sierra 3500 right now, from 13 current listings at 13 dealerships across 8 states, with EPA fuel economy, NHTSA safety ratings and recalls for this model year.

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

13Listings for sale now
$46,455Median asking price
$41,396–$57,981Typical range (10th–90th percentile)
82,530Median miles (13 listings with odometer)
13Dealerships listing it
See 2021 GMC Sierra 3500 listingsAll GMC Sierra 3500 yearsOther GMC models
In brief

2021 GMC Sierra 3500 overview

AutosXchange has 13 listed now, with a median asking price of $46,455 and median 82,530 miles.

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

2021 GMC Sierra 3500: the market right now

Half of the 13 listings ask between $44,083 and $53,394.

$44,08325th percentile asking price
$46,455Median asking price
$53,39475th percentile asking price
82,530Median miles (middle half 48,933–99,549)
0Listings with a price cut since first listed
13Cities with listings

New vs. used (by odometer)

New or demo (under 100 mi): 0Used (100+ mi): 13

Top cities by supply

2021 GMC Sierra 3500 listings by cityModesto, CA: 1 listings, median $58,270; Lakeland, FL: 1 listings, median $50,290; Newark, IL: 1 listings, median $44,900; Brandenburg, KY: 1 listings, median $53,394; Florence, KY: 1 listings, median $56,825; Georgetown, KY: 1 listings, median $52,487; Cambridge, OH: 1 listings, median $40,998; Hicksville, OH: 1 listings, median $45,395.Modesto, CAModesto, CA: 1 · median $58.3k1 · median $58.3kLakeland, FLLakeland, FL: 1 · median $50.3k1 · median $50.3kNewark, ILNewark, IL: 1 · median $44.9k1 · median $44.9kBrandenburg, KYBrandenburg, KY: 1 · median $53.4k1 · median $53.4kFlorence, KYFlorence, KY: 1 · median $56.8k1 · median $56.8kGeorgetown, KYGeorgetown, KY: 1 · median $52.5k1 · median $52.5kCambridge, OHCambridge, OH: 1 · median $41k1 · median $41kHicksville, OHHicksville, OH: 1 · median $45.4k1 · median $45.4k
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

2021 GMC Sierra 3500: asking price vs. mileage

Asking price shows no clear link to mileage in current listings.

2021 GMC Sierra 3500 asking price vs. mileageScatter of 10 current 2021 GMC Sierra 3500 listings (asking price against odometer miles), with a least-squares trend line of about $-400 per 10,000 miles.$40k$42.5k$45k$47.5k$50k$52.5k$55k$57.5k$60k020k40k60k80k100k120kOdometer (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

2021 GMC Sierra 3500: how asking prices are spread

Half of listings ask between $44,083 and $53,394; the most common band is $42,500–$45,000 (3 listings).

2021 GMC Sierra 3500 asking price distributionHistogram of 13 current 2021 GMC Sierra 3500 asking prices in 11 bins of $2,500; median $46,455.0123$35k–$37.5k: 1 listing$37.5k–$40k: 0 listings$40k–$42.5k: 1 listing$42.5k–$45k: 3 listings$45k–$47.5k: 2 listings$47.5k–$50k: 0 listings$50k–$52.5k: 2 listings$52.5k–$55k: 1 listing$55k–$57.5k: 1 listing$57.5k–$60k: 1 listing$60k–$62.5k: 1 listing$35k$40k$45k$50k$55k$60k$62.5kMedian $46,455Asking 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 3500: listings by state

Kentucky has the most, with 3 listings (23% of 13).

2021 GMC Sierra 3500 listings by stateNumber of current 2021 GMC Sierra 3500 listings by dealer state: Kentucky 3, Texas 3, Ohio 2, California 1, Florida 1, Illinois 1, Pennsylvania 1, Tennessee 1.KentuckyKentucky: 3 · 23%3 · 23%TexasTexas: 3 · 23%3 · 23%OhioOhio: 2 · 15%2 · 15%CaliforniaCalifornia: 1 · 8%1 · 8%FloridaFlorida: 1 · 8%1 · 8%IllinoisIllinois: 1 · 8%1 · 8%PennsylvaniaPennsylvania: 1 · 8%1 · 8%TennesseeTennessee: 1 · 8%1 · 8%
Counts current AutosXchange listings by the selling dealer's state (8 states in total).
Current listings

2021 GMC Sierra 3500 for sale now: best value first

2021 GMC Sierra 3500 HD SLE for sale in Plano, TX29% below similar
2021 GMC Sierra 3500 HD SLE$35,48882,530 mi · Plano, TXKian Motors
2021 GMC Sierra 3500 HD SLT for sale in Cambridge, OH18% below similar
2021 GMC Sierra 3500 HD SLT$40,998107,818 mi · Cambridge, OHCambridge Truck
2021 GMC Sierra 3500 HD SLE for sale in Butler, PA14% below similar
2021 GMC Sierra 3500 HD SLE$42,99026,186 mi · Butler, PABaglier Buick GMC
2021 GMC Sierra 3500 HD SLT for sale in Alcoa, TN12% below similar
2021 GMC Sierra 3500 HD SLT$44,08391,671 mi · Alcoa, TNRick McGill's Airport Toyota
2021 GMC Sierra 3500 SLE Truck for sale in Newark, IL10% below similar
2021 GMC Sierra 3500 SLE Truck$44,90099,549 mi · Newark, ILNewark Rides
2021 GMC Sierra 3500 HD for sale in Hicksville, OH9% below similar
2021 GMC Sierra 3500 HD$45,39536,027 mi · Hicksville, OHJim Schmidt Chevrolet of Hicksville
Used 2021 GMC Sierra 3500 HD Denali Truck Crew Cab V-8 cyl for sale in Fort Worth, TX7% below similar
Used 2021 GMC Sierra 3500 HD Denali Truck Crew Cab V-8 cyl$46,455134,905 mi · Fort Worth, TXDavid McDavid Ford
2021 GMC Sierra 3500 HD AT4 for sale in Lakeland, FL
2021 GMC Sierra 3500 HD AT4$50,29060,010 mi · Lakeland, FLLakeland Chrysler Dodge Jeep Ram
2021 GMC Sierra 3500 HD Denali for sale in Georgetown, KY
2021 GMC Sierra 3500 HD Denali$52,487102,410 mi · Georgetown, KYDan Cummins Chevrolet of Georgetown
2021 GMC Sierra 3500 HD AT4 for sale in Brandenburg, KY
2021 GMC Sierra 3500 HD AT4$53,39489,501 mi · Brandenburg, KYFlaherty Chevrolet
2021 GMC Sierra 3500 HD for sale in Florence, KY
2021 GMC Sierra 3500 HD$56,82544,395 mi · Florence, KYJeff Wyler Florence Buick GMC
2021 GMC Sierra 3500 HD SLT for sale in Modesto, CA
2021 GMC Sierra 3500 HD SLT$58,27051,127 mi · Modesto, CAAcura of Modesto
2021 GMC Sierra 3500 HD Denali for sale in Castroville, TX
2021 GMC Sierra 3500 HD Denali$61,58048,933 mi · Castroville, TXNorth Park Chevrolet Castroville
See all 13 2021 GMC Sierra 3500 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.
AutosXchange Intel

2021 GMC Sierra 3500 price activity

AutosXchange started tracking 2021 GMC Sierra 3500 prices on Nov 5, 2026. Price-activity trends appear once at least 30 listings from 5 dealers are tracked nationally.

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
By model year

GMC Sierra 3500 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

2021 GMC Sierra 3500 for sale by city

FAQ

Frequently asked questions

What is the average asking price of a 2021 GMC Sierra 3500?
Across 13 current listings on AutosXchange, the median asking price of a 2021 GMC Sierra 3500 is $46,455. Most listings (10th to 90th percentile) ask between $41,396 and $57,981. These are dealer asking prices, not sold prices.
How many GMC Sierra 3500 are for sale?
AutosXchange currently lists 13 vehicles from 13 dealerships in 8 states.
What mileage is typical for a 2021 GMC Sierra 3500?
The median odometer reading is 82,530 miles; the middle half of listings show between 48,933 and 99,549 miles (13 listings with a published odometer).
What is a fair asking price for a 2021 GMC Sierra 3500?
Half of current listings ask between $44,083 and $53,394 (25th to 75th percentile), around a median of $46,455. 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 3500 for sale?
Kentucky has the most current listings (3), followed by Texas (3).

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.