2021 Gmc Sierra prices in the U.S.
The median pre-owned asking price for a 2021 Gmc Sierra in the U.S. is $37,422 based on 2,934 pre-owned listings (of 3,668 total).
As of July 25, 2026, the median asking price for a used 2021 Gmc Sierra in the U.S. is $37,422, based on 2,934 active dealer listings tracked by VinAssessment.
◷ Updated July 25, 2026 ▤ 3,668 active dealer listings, refreshed daily Methodology →
Typical: $32,991–$42,445 — the middle half of 3,668 asking prices
Why the wide range? Price depends mostly on configuration and mileage — see below. This spread covers the middle 96% of asking prices: we exclude the cheapest and priciest 2% (payment-priced ads, typos, salvage) so outliers don't distort it.
What moves the price on a 2021 Gmc Sierra
The $32,991–$42,445 typical range isn't randomness — three factors explain most of it:
The same car typically asks $31,492 in Connecticut but $45,895 in Nevada.
The SLE typically asks $31,999, while the Denali asks $43,686 — same year, same market.
Asking prices run about $40,859 under 15K miles and fall to $32,085 over 105K miles — roughly $800 for every 10,000 miles.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 989 real asking prices, adjusted for mileage and location. Not a formal appraisal.
2021 Gmc Sierra: a fair price for your mileage
A 2021 Gmc Sierra sheds roughly $800 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | AT4 | Denali | SLT | Elevation | SLE |
|---|---|---|---|---|---|---|
| Under 15K miles | $40,859 | $37,577 | $51,642 | $40,859 | $35,718 | — |
| 15K–30K miles | $46,145 | $45,790 | $48,001 | $43,992 | $37,872 | $38,050 |
| 30K–45K miles | $42,987 | $45,600 | $47,553 | $40,890 | $38,228 | $35,998 |
| 45K–60K miles | $41,577 | $42,431 | $45,330 | $39,990 | $35,872 | $36,075 |
| 60K–75K miles | $39,200 | $40,368 | $42,856 | $37,495 | $34,000 | $32,944 |
| 75K–90K miles | $36,762 | $38,760 | $40,014 | $35,502 | $32,410 | $31,357 |
| 90K–105K miles | $34,995 | $37,022 | $38,488 | $34,219 | $30,045 | $29,900 |
| Over 105K miles | $32,085 | $33,708 | $36,589 | $30,536 | $28,181 | $26,990 |
Medians of live asking prices per band and version; “—” means fewer than 3 matching listings. National data.
Fair price by mileage — all versions combined
| Mileage ⓘ | Based on ⓘ | Fair price ⓘ | Typical range ⓘ |
|---|---|---|---|
| Under 15K miles | 58 listings | $40,859 | $37K–$50K |
| 15K–30K miles | 115 listings | $46,145 | $43K–$51K |
| 30K–45K miles | 281 listings | $42,987 | $39K–$47K |
| 45K–60K miles | 486 listings | $41,577 | $38K–$45K |
| 60K–75K miles | 649 listings | $39,200 | $35K–$42K |
| 75K–90K miles | 654 listings | $36,762 | $34K–$40K |
| 90K–105K miles | 612 listings | $34,995 | $32K–$38K |
| Over 105K miles | 805 listings | $32,085 | $29K–$36K |
Same trim and condition assumed — mileage is the biggest lever after configuration.
2021 Gmc Sierra: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| AT4 | 989 listings | $38,848 | $35K–$43K | |
| Denali | 910 listings | $43,686 | $39K–$53K | |
| SLT | 822 listings | $35,995 | $33K–$40K | |
| Elevation | 595 listings | $32,587 | $30K–$35K | |
| SLE | 227 listings | $31,999 | $29K–$36K |
Price history
Median asking price by month · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2021 Gmc Sierra is $36,995 (July 2026) — up 5.9% from $34,940 in April 2026.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| July 2026 | $36,995 | $32K–$43K | 629 |
| June 2026 | $36,500 | $32K–$43K | 447 |
| May 2026 | $36,867 | $32K–$45K | 92 |
| April 2026 | $34,940 | $29K–$44K | 98 |
2021 Gmc Sierra prices by state
Listed this year counts every 2021 Gmc Sierra first listed in 2026 (sold and active), with currently active cars as a floor. Typical price is the median of each car's latest asking price — or the average of active listings where this-year data is thin.
Keep exploring Sierra prices
2021 Gmc Sierra · $38,651 typical · 3,668 listingsOther Gmc Sierra years
Live 2021 Gmc Sierra listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2020–2022 Gmc Sierra listings on VehiSales →.
More 2021 Gmc prices
Frequently asked questions
Why do 2021 Gmc Sierra prices range from $24,232 to $61,830?
The spread comes down to configuration and mileage: higher-mileage, base-configuration examples sit near the low end, while low-mileage and premium configurations reach the top. Half of all listings fall between $32,991 and $42,445 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2021 Gmc Sierra?
Expect roughly $800 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $2,400 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
How many 2021 Gmc Sierra are for sale right now?
3,668 in total. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 3,668 active listings for this vehicle across dealer sites nationwide, updated every day. Average and median are computed from real asking prices on live listings. We exclude the top and bottom 2% of prices to remove data errors, salvage titles, and monthly-payment figures posted as if they were sale prices. Prices reflect dealer asking prices — not final sale prices — and exclude taxes, fees, and incentives. Trim and mileage move the price more than any other factor; see the breakdowns above.
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