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AutosXchange market research

2020 GMC Sierra market value, prices & key facts

What dealers are asking for the 2020 GMC Sierra right now, from 14 current listings at 11 dealerships across 7 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

14Listings for sale now
$33,003Median asking price
$30,143–$46,480Typical range (10th–90th percentile)
118,327Median miles (14 listings with odometer)
11Dealerships listing it
See 2020 GMC Sierra listingsAll GMC Sierra yearsOther GMC models
In brief

2020 GMC Sierra overview

AutosXchange has 14 listed now, with a median asking price of $33,003 and median 118,327 miles.

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

2020 GMC Sierra: the market right now

Half of the 14 listings ask between $31,991 and $37,120.

$31,99125th percentile asking price
$33,003Median asking price
$37,12075th percentile asking price
118,327Median miles (middle half 110,032–149,114)
0Listings with a price cut since first listed
11Cities with listings

New vs. used (by odometer)

New or demo (under 100 mi): 0Used (100+ mi): 14

Top cities by supply

2020 GMC Sierra listings by cityPerry, MI: 4 listings, median $44,200; Louisville, KY: 1 listings, median $30,487; Lewiston, ME: 1 listings, median $31,995; Sanford, ME: 1 listings, median $32,995; Turner, ME: 1 listings, median $31,990; Windsor, ME: 1 listings, median $29,995; Bismarck, ND: 1 listings, median $35,999; Muskogee, OK: 1 listings, median $37,493.Perry, MIPerry, MI: 4 · median $44.2k4 · median $44.2kLouisville, KYLouisville, KY: 1 · median $30.5k1 · median $30.5kLewiston, MELewiston, ME: 1 · median $32k1 · median $32kSanford, MESanford, ME: 1 · median $33k1 · median $33kTurner, METurner, ME: 1 · median $32k1 · median $32kWindsor, MEWindsor, ME: 1 · median $30k1 · median $30kBismarck, NDBismarck, ND: 1 · median $36k1 · median $36kMuskogee, OKMuskogee, OK: 1 · median $37.5k1 · median $37.5k
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: asking price vs. mileage

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

2020 GMC Sierra asking price vs. mileageScatter of 11 current 2020 GMC Sierra listings (asking price against odometer miles), with a least-squares trend line of about $-20 per 10,000 miles.$25k$30k$35k$40k$45k$50k025k50k75k100k125k150k175k200kOdometer (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

2020 GMC Sierra: how asking prices are spread

Half of listings ask between $31,991 and $37,120; the most common band is $32,500–$35,000 (4 listings).

2020 GMC Sierra asking price distributionHistogram of 14 current 2020 GMC Sierra asking prices in 11 bins of $2,500; median $33,003.01234$25k–$27.5k: 1 listing (includes 1 below $25k)$27.5k–$30k: 1 listing$30k–$32.5k: 3 listings$32.5k–$35k: 4 listings$35k–$37.5k: 2 listings$37.5k–$40k: 1 listing$40k–$42.5k: 0 listings$42.5k–$45k: 0 listings$45k–$47.5k: 0 listings$47.5k–$50k: 1 listing$50k–$52.5k: 1 listing (includes 1 above $52.5k)≤$25k$30k$35k$40k$45k$50k$52.5k+Median $33,003Asking 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: listings by state

Maine has the most, with 4 listings (29% of 14).

2020 GMC Sierra listings by stateNumber of current 2020 GMC Sierra listings by dealer state: Maine 4, Michigan 4, Washington 2, Kentucky 1, North Dakota 1, Oklahoma 1, Texas 1.MaineMaine: 4 · 29%4 · 29%MichiganMichigan: 4 · 29%4 · 29%WashingtonWashington: 2 · 14%2 · 14%KentuckyKentucky: 1 · 7%1 · 7%North DakotaNorth Dakota: 1 · 7%1 · 7%OklahomaOklahoma: 1 · 7%1 · 7%TexasTexas: 1 · 7%1 · 7%
Counts current AutosXchange listings by the selling dealer's state (7 states in total).
Current listings

2020 GMC Sierra for sale now: best value first

2020 GMC Sierra Elevation for sale in Spokane, WA31% below similar
2020 GMC Sierra Elevation$24,980154,462 mi · Spokane, WANorthtown Auto Sales
2020 GMC Sierra AT4 for sale in Windsor, ME17% below similar
2020 GMC Sierra AT4$29,995109,273 mi · Windsor, MEASA Family Auto Sales
2020 GMC Sierra SLT for sale in Louisville, KY15% below similar
2020 GMC Sierra SLT$30,487118,376 mi · Louisville, KYByerly Nissan
2020 GMC Sierra Denali for sale in Turner, ME11% below similar
2020 GMC Sierra Denali$31,990112,310 mi · Turner, MEK.R.Y. Auto
2020 GMC Sierra Crew Cab 4WD for sale in Lewiston, ME11% below similar
2020 GMC Sierra Crew Cab 4WD$31,995125,766 mi · Lewiston, MECars For Less
2020 GMC Sierra Denali for sale in Sanford, ME8% below similar
2020 GMC Sierra Denali$32,995168,402 mi · Sanford, MEGold Rush Auto Sales
2020 GMC SIERRA for sale in Perry, MI8% below similar
2020 GMC SIERRA$33,000232,210 mi · Perry, MIMichigan's Largest Independent Truck Dealership
2020 GMC Sierra AT4 for sale in Canton, TX8% below similar
2020 GMC Sierra AT4$33,006133,069 mi · Canton, TXI20 Chrysler Dodge Jeep Ram
2020 GMC Sierra for sale in Spokane Valley, WA
2020 GMC Sierra$34,995114,000 mi · Spokane Valley, WARuby Street Motors
2020 GMC SIERRA AT4 for sale in Bismarck, ND
2020 GMC SIERRA AT4$35,99992,001 mi · Bismarck, NDSchmidt Auto Sales, Inc.
2020 GMC Sierra SLT for sale in Muskogee, OK
2020 GMC Sierra SLT$37,49372,275 mi · Muskogee, OKAll Star CDJR of Muskogee
2020 GMC SIERRA for sale in Perry, MI
2020 GMC SIERRA$38,500181,008 mi · Perry, MIMichigan's Largest Independent Truck Dealership
2020 GMC SIERRA for sale in Perry, MI
2020 GMC SIERRA$49,900118,277 mi · Perry, MIMichigan's Largest Independent Truck Dealership
2020 GMC SIERRA for sale in Perry, MI
2020 GMC SIERRA$52,50088,669 mi · Perry, MIMichigan's Largest Independent Truck Dealership
See all 14 2020 GMC Sierra 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

2020 GMC Sierra price activity

AutosXchange started tracking 2020 GMC Sierra 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 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 for sale by city

FAQ

Frequently asked questions

What is the average asking price of a 2020 GMC Sierra?
Across 14 current listings on AutosXchange, the median asking price of a 2020 GMC Sierra is $33,003. Most listings (10th to 90th percentile) ask between $30,143 and $46,480. These are dealer asking prices, not sold prices.
How many GMC Sierra are for sale?
AutosXchange currently lists 14 vehicles from 11 dealerships in 7 states.
What mileage is typical for a 2020 GMC Sierra?
The median odometer reading is 118,327 miles; the middle half of listings show between 110,032 and 149,114 miles (14 listings with a published odometer).
What is a fair asking price for a 2020 GMC Sierra?
Half of current listings ask between $31,991 and $37,120 (25th to 75th percentile), around a median of $33,003. 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 for sale?
Maine has the most current listings (4), followed by Michigan (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.