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AutosXchange market research

2020 GMC Sierra 3500 market value, prices & key facts

What dealers are asking for the 2020 GMC Sierra 3500 right now, from 29 current listings at 29 dealerships across 16 states, with EPA fuel economy, NHTSA safety ratings and recalls for this model year.

Asking prices of current listings · AutosXchange live dealer listings, November 12, 2026 · not sold prices

2020 GMC Sierra 3500
2020 GMC Sierra 3500 · Photo from a listing on AutosXchange
29Listings for sale now
$46,977Median asking price
$37,235–$56,151Typical range (10th–90th percentile)
83,887Median miles (29 listings with odometer)
29Dealerships listing it
See 2020 GMC Sierra 3500 listingsShop GMC Sierra 3500 for saleAll GMC Sierra 3500 yearsOther GMC models
In brief

2020 GMC Sierra 3500 overview

AutosXchange has 29 listed now, with a median asking price of $46,977 and median 83,887 miles.

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

2020 GMC Sierra 3500: the market right now

Half of the 29 listings ask between $43,465 and $51,686.

$43,46525th percentile asking price
$46,977Median asking price
$51,68675th percentile asking price
83,887Median miles (middle half 63,599–104,232)
3Listings with a price cut since first listed
29Cities with listings

New vs. used (by odometer)

New or demo (under 100 mi): 0Used (100+ mi): 29

Top cities by supply

2020 GMC Sierra 3500 listings by cityDothan, AL: 1 listings, median $33,950; Pelham, AL: 1 listings, median $54,999; Goodyear, AZ: 1 listings, median $46,694; Eureka, CA: 1 listings, median $50,995; Fillmore, CA: 1 listings, median $65,805; Denver, CO: 1 listings, median $39,224; Pueblo, CO: 1 listings, median $40,584; Miami, FL: 1 listings, median $56,795.Dothan, ALDothan, AL: 1 · median $34k1 · median $34kPelham, ALPelham, AL: 1 · median $55k1 · median $55kGoodyear, AZGoodyear, AZ: 1 · median $46.7k1 · median $46.7kEureka, CAEureka, CA: 1 · median $51k1 · median $51kFillmore, CAFillmore, CA: 1 · median $65.8k1 · median $65.8kDenver, CODenver, CO: 1 · median $39.2k1 · median $39.2kPueblo, COPueblo, CO: 1 · median $40.6k1 · median $40.6kMiami, FLMiami, FL: 1 · median $56.8k1 · median $56.8k
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

2020 GMC Sierra 3500: asking price vs. mileage

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

2020 GMC Sierra 3500 asking price vs. mileageScatter of 27 current 2020 GMC Sierra 3500 listings (asking price against odometer miles), with a least-squares trend line of about $-170 per 10,000 miles.$30k$35k$40k$45k$50k$55k$60k020k40k60k80k100k120k140kOdometer (miles)Asking price
Each dot is one current listing; the line is a straight least-squares fit over all of them. 2 extreme listings (top/bottom 1% of price or mileage) are outside the chart.
Price distribution

2020 GMC Sierra 3500: how asking prices are spread

Half of listings ask between $43,465 and $51,686; the most common band is $45,000–$47,500 (8 listings).

2020 GMC Sierra 3500 asking price distributionHistogram of 29 current 2020 GMC Sierra 3500 asking prices in 14 bins of $2,500; median $46,977.02468$30k–$32.5k: 1 listing$32.5k–$35k: 2 listings$35k–$37.5k: 0 listings$37.5k–$40k: 2 listings$40k–$42.5k: 2 listings$42.5k–$45k: 2 listings$45k–$47.5k: 8 listings$47.5k–$50k: 2 listings$50k–$52.5k: 4 listings$52.5k–$55k: 2 listings$55k–$57.5k: 3 listings$57.5k–$60k: 0 listings$60k–$62.5k: 0 listings$62.5k–$65k: 1 listing (includes 1 above $65k)$30k$37.5k$45k$52.5k$60k$65k+Median $46,977Asking 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

2020 GMC Sierra 3500: listings by state (top 10)

Texas has the most, with 5 listings (17% of 29).

2020 GMC Sierra 3500 listings by stateNumber of current 2020 GMC Sierra 3500 listings by dealer state: Texas 5, Alabama 2, California 2, Colorado 2, Florida 2, Kentucky 2, Minnesota 2, Ohio 2, Oregon 2, Washington 2.TexasTexas: 5 · 17%5 · 17%AlabamaAlabama: 2 · 7%2 · 7%CaliforniaCalifornia: 2 · 7%2 · 7%ColoradoColorado: 2 · 7%2 · 7%FloridaFlorida: 2 · 7%2 · 7%KentuckyKentucky: 2 · 7%2 · 7%MinnesotaMinnesota: 2 · 7%2 · 7%OhioOhio: 2 · 7%2 · 7%OregonOregon: 2 · 7%2 · 7%WashingtonWashington: 2 · 7%2 · 7%
Counts current AutosXchange listings by the selling dealer's state (16 states in total).
Current listings

2020 GMC Sierra 3500 for sale now: best value first

See all 29 2020 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.

2020 GMC Sierra 3500 (all trims) (all model years: too few prices for this year yet): market value

Market value (30 days): $24,995, based on 48 cars for sale now and 1 last listed price. 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
$24,995
based on 48 cars for sale now and 1 last listed price
Last listed (listings removed, 7d): $12,995 · based on 1 last listed priceFor sale now (asking): $25,497 · based on 48 cars for sale now
7 days
30-day market value
$24,995
based on 48 cars for sale now and 1 last listed price
Last listed (listings removed, 30d): $12,995 · based on 1 last listed priceFor sale now (asking): $25,497 · based on 48 cars for sale now
based on 7 days of tracking since Nov 5, 2026
90-day market value
$24,995
based on 48 cars for sale now and 1 last listed price
Last listed (listings removed, 90d): $12,995 · based on 1 last listed priceFor sale now (asking): $25,497 · based on 48 cars for sale now
based on 7 days of tracking since Nov 5, 2026

Market value, last listed and asking prices per day

  • Market value $24,995
  • Last listed (listings removed) —
  • For sale now (asking) $25,497
2020 GMC Sierra 3500 (all trims): market value, last listed median and current asking median per day (30-day window)Nov 7: market value —, last listed —, asking $23,900; Nov 8: market value —, last listed —, asking $23,900; Nov 9: market value —, last listed —, asking $24,478; Nov 10: market value $24,995, last listed —, asking $25,497; Nov 11: market value $24,995, last listed —, asking $25,497; Nov 12: market value $24,995, last listed —, asking $25,497$23.5k$24k$24.5k$25k$25.5kNov 7Nov 8Nov 9Nov 10Nov 11Nov 12Nov 7: market value —, last listed median —, current asking median $23,900Nov 8: market value —, last listed median —, current asking median $23,900Nov 9: market value —, last listed median —, current asking median $24,478Nov 10: market value $24,995, last listed median —, current asking median $25,497Nov 11: market value $24,995, last listed median —, current asking median $25,497Nov 12: market value $24,995, last listed median —, current asking median $25,497

30-day window, based on 7 days of tracking since Nov 5, 2026. Latest: market value based on 48 cars for sale now and 1 last listed price. 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.

2020 GMC Sierra 3500: 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
TXnot enough data heren 1not enough data herenot enough data heren 1
CAnot enough data heren 1not enough data herenot enough data heren 1
Nationalnot enough data heren 2not enough data herenot enough data heren 2
AutosXchange Intel

2020 GMC Sierra 3500 price activity

AutosXchange started tracking 2020 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

2020 GMC Sierra 3500 for sale by city

FAQ

Frequently asked questions

What is the average asking price of a 2020 GMC Sierra 3500?
Across 29 current listings on AutosXchange, the median asking price of a 2020 GMC Sierra 3500 is $46,977. Most listings (10th to 90th percentile) ask between $37,235 and $56,151. These are dealer asking prices, not sold prices.
How many GMC Sierra 3500 are for sale?
AutosXchange currently lists 29 vehicles from 29 dealerships in 16 states.
What mileage is typical for a 2020 GMC Sierra 3500?
The median odometer reading is 83,887 miles; the middle half of listings show between 63,599 and 104,232 miles (29 listings with a published odometer).
What is a fair asking price for a 2020 GMC Sierra 3500?
Half of current listings ask between $43,465 and $51,686 (25th to 75th percentile), around a median of $46,977. 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?
Texas has the most current listings (5), followed by Alabama (2).

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.