2015 GMC Sierra prices in the U.S.
The median pre-owned asking price for a 2015 GMC Sierra in the U.S. is $20,998 based on 1,599 pre-owned listings (of 1,601 total).
As of September 9, 2026, the median asking price for a used 2015 GMC Sierra in the U.S. is $20,998, based on 1,599 active dealer listings tracked by VinAssessment.
◷ Updated September 9, 2026 ▤ 1,601 active dealer listings, refreshed daily ⛭ Generation: 2011–2015
Typical: $16,995–$26,999 — the middle half of 1,601 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 2015 GMC Sierra
The $16,995–$26,999 typical range isn't randomness — three factors explain most of it:
The same car typically asks $12,900 in Connecticut but $28,498 in Idaho.
The SLE typically asks $18,330, while the Denali asks $28,972 — same year, same market.
Asking prices run about $22,220 under 15K miles and fall to $19,500 over 105K miles — roughly $300 for every 10,000 miles.
Find your mileage and trim in the configurator below.
Configure the exact car
Modelled from 566 real asking prices, adjusted for mileage and location. Not a formal appraisal.
What would a 2015 GMC Sierra cost per month?
Estimate the monthly payment on a $21,572 vehicle. Move the numbers to match your own loan.
Estimate only. Excludes tax, title, registration and dealer fees, and assumes a fixed-rate loan with equal monthly payments. Your actual rate depends on your credit and lender.
2015 GMC Sierra: a fair price for your mileage
A 2015 GMC Sierra sheds roughly $300 for every 10,000 miles. Find your mileage below.
Fair price by mileage and trim
| Mileage | All listings | SLT | SLE | Denali |
|---|---|---|---|---|
| Under 15K miles | $22,220 | $19,900 | — | — |
| 15K–30K miles | $29,800 | — | — | — |
| 30K–45K miles | $42,988 | $37,498 | $32,988 | $50,136 |
| 45K–60K miles | $27,824 | $29,450 | $24,969 | $31,688 |
| 60K–75K miles | $27,553 | $27,455 | $24,612 | $36,150 |
| 75K–90K miles | $26,998 | $26,998 | $23,995 | $41,190 |
| 90K–105K miles | $24,452 | $24,936 | $21,836 | $34,995 |
| Over 105K miles | $19,500 | $19,986 | $16,998 | $25,997 |
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 | 5 listings | $22,220 | $20K–$23K |
| 15K–30K miles | 11 listings | $29,800 | $30K–$39K |
| 30K–45K miles | 17 listings | $42,988 | $33K–$49K |
| 45K–60K miles | 34 listings | $27,824 | $24K–$32K |
| 60K–75K miles | 70 listings | $27,553 | $23K–$32K |
| 75K–90K miles | 122 listings | $26,998 | $23K–$36K |
| 90K–105K miles | 156 listings | $24,452 | $22K–$30K |
| Over 105K miles | 1,173 listings | $19,500 | $16K–$24K |
Same trim and condition assumed — mileage is the biggest lever after configuration.
2015 GMC Sierra: price by trim
| Trim | Based on ⓘ | Median price ⓘ | Typical range ⓘ | Where it sits ⓘ |
|---|---|---|---|---|
| SLT | 566 listings | $21,572 | $18K–$26K | |
| SLE | 467 listings | $18,330 | $15K–$22K | |
| Denali | 391 listings | $28,972 | $22K–$36K |
Live 2015 GMC Sierra listings, priced by VIN
Every VIN links to a full market report: decode, active listings and the local price band. Shop 2014–2016 GMC Sierra listings on VehiSales →.
Price history
Median asking price by month · shaded band is the typical range (25th–75th percentile)
The median listing price for a 2015 GMC Sierra is $20,990 (September 2026) — up 0.6% from $20,872 in March 2026.
Monthly price table
| Month | Median price | Typical range | Vehicles listed |
|---|---|---|---|
| September 2026 | $20,990 | $17K–$27K | 262 |
| August 2026 | $21,092 | $17K–$26K | 377 |
| July 2026 | $19,995 | $16K–$25K | 407 |
| June 2026 | $19,999 | $16K–$26K | 264 |
| May 2026 | $20,358 | $17K–$28K | 110 |
| April 2026 | $22,995 | $18K–$36K | 98 |
| March 2026 | $20,872 | $17K–$27K | 92 |
2015 GMC Sierra prices by state
Listed this year counts every 2015 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.
Factory configurations of the 2015 GMC Sierra
205 factory configurations left the plant as a 2015 GMC Sierra — the most common are below, each decoded into its own build sheet from the VIN pattern.
- SLT 6L 8cyl 4WD $27,980
- SLT 6.6L 8cyl 4WD 24 built
- Fleet/Base 6L 8cyl 4WD 32 built
- Denali 6.2L 8cyl 4WD $21,900
- Fleet/Base 6L 8cyl 4WD $20,998
- Denali 6.6L 8cyl 4WD $33,900
- SLE 5.3L 8cyl 4WD $19,341
- Denali 6L 8cyl 4WD $29,595
- Denali 6.2L 8cyl RWD 169 built
- SLT 6.6L 8cyl 4WD $31,000
- SLE 6.6L 8cyl 4WD 218 built
- SLT 5.3L 8cyl 4WD $20,775
- SLE 6L 8cyl 4WD 25 built
- Fleet/Base 6L 8cyl 4WD 78 built
- Fleet/Base 6L 8cyl RWD 110 built
- Fleet/Base 4.3L 6cyl 4WD 173 built
- Fleet/Base 6L 8cyl RWD 79 built
- Denali 5.3L 8cyl 4WD $22,788
- SLT 6.6L 8cyl 4WD $34,900
- SLE 6L 8cyl 4WD $22,995
- SLT 6L 8cyl 4WD $26,719
- Denali 5.3L 8cyl RWD $21,000
- Fleet/Base 4.3L 6cyl RWD 45 built
- SLT 6.6L 8cyl 4WD $29,995
Keep exploring Sierra prices
2015 GMC Sierra · $20,995 typical · 1,601 listingsOther GMC Sierra years
More 2015 GMC prices
Own a 2015 GMC Sierra? See what it's worth →
Frequently asked questions
Why do 2015 GMC Sierra prices range from $9,500 to $43,881?
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 $16,995 and $26,999 — see the mileage and trim breakdowns above for where a specific vehicle lands.
How much should mileage change the price of a 2015 GMC Sierra?
Expect roughly $300 less for every 10,000 miles on the odometer. A 60K-mile example should cost about $900 less than a 30K-mile one of the same trim — check the fair-price-by-mileage table above for your band.
How many 2015 GMC Sierra are for sale right now?
1,601 in total, nearly all pre-owned. Counts refresh daily from live dealer inventory.
How we calculate these prices
We track 1,601 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 reduce the influence of extreme values. This does not verify title status or guarantee that every erroneous listing is excluded. 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.
Want the original factory equipment and MSRP behind a specific car? Look up the original Monroney sticker for a 2015 GMC →
Shopping for this car?
Check individual VINs before you buy — decode the exact trim and mileage, see every active listing, and how each price compares to the local market.