Used 2021 GMC Sierra 1500 prices, November 2026
A used 2021 GMC Sierra 1500 is listed for about $29,545–$36,964 at US dealers (middle 50% of 3,598 listings), with a median of $33,064 at 85,583 miles, as of Nov 7, 2026. That's 1.2% lower than on Oct 25, 2026 ($33,467).
Updated · By CarWhere Research · Source: active US dealer listings (licensed vehicle-data providers) · About this data
Median asking price
$33,064
Average $33,252
Median miles
85,583
Average 87,543
For sale now
3,598
129 certified (3.6%)
Median days listed
44
How much is a used 2021 GMC Sierra 1500?
A used 2021 GMC Sierra 1500 has a median asking price of $33,064 (average $33,252), with the middle half of listings between $29,545 and $36,964. That sits between the 2020 ($31,549) and the 2023 ($41,269).
Are used 2021 GMC Sierra 1500 prices going down?
Yes. The median asking price for a used 2021 GMC Sierra 1500 moved from $33,467 on Oct 25, 2026 to $33,064 on Nov 7, 2026 (-1.2%).
Dealer asking price vs. trade-in vs. private sale
The prices on this page are what US dealers are asking for a 2021 GMC Sierra 1500 today, before negotiation, taxes and fees. A dealer's trade-in offer for the same car is usually well below its asking price, because the dealer has to recondition it, carry it and still make a margin. A private sale typically lands between the two. To estimate your own car, try the trade-in calculator or the used car value tool.
Used 2021 GMC Sierra 1500 listings by trim
The AT4 is the most common 2021 Sierra 1500 on dealer lots (31.2% of listings). Click a count for those listings.
| Trim | For sale now | Share (%) |
|---|---|---|
| AT4 | 1,122 | 31.2% |
| SLT | 1,082 | 30.1% |
| Elevation | 952 | 26.5% |
| SLE | 233 | 6.5% |
| Base | 119 | 3.3% |
| Denali | 90 | 2.5% |
Where are the most used 2021 GMC Sierra 1500s for sale?
Texas has the most (449 listings), followed by Florida, Michigan, California. More local supply means more cars to compare and more room to negotiate.
| State | For sale now | Share of US listings (%) |
|---|---|---|
| Texas | 449 | 12.5% |
| Florida | 179 | 5% |
| Michigan | 177 | 4.9% |
| California | 150 | 4.2% |
| Georgia | 138 | 3.8% |
| Illinois | 127 | 3.5% |
| Ohio | 124 | 3.4% |
| Pennsylvania | 107 | 3% |
| New York | 105 | 2.9% |
| Alabama | 101 | 2.8% |
Other Sierra 1500 model years
| Model year | Median price (USD) | Median miles | For sale now |
|---|---|---|---|
| 2026 | $55,015 | 9,129 | 3,490 |
| 2025 | $45,447 | 31,688 | 5,178 |
| 2024 | $43,635 | 37,140 | 5,443 |
| 2023 | $41,269 | 50,360 | 4,260 |
| 2021 | $33,064 | 85,583 | 3,598 |
| 2020 | $31,549 | 94,656 | 2,439 |
Frequently asked questions
How much is a 2021 GMC Sierra 1500?
A used 2021 GMC Sierra 1500 has a median asking price of $33,064 (average $33,252), with the middle half of listings between $29,545 and $36,964. That sits between the 2020 ($31,549) and the 2023 ($41,269). Based on 3,598 listings on Nov 7, 2026.
What is a 2021 GMC Sierra 1500 worth?
At a dealer, most 2021 GMC Sierra 1500s are priced $29,545–$36,964; the median listing has 85,583 miles. Lower miles, a higher trim and certified pre-owned status push a car toward the top of that range. Expect a trade-in offer below the dealer asking range, and a private sale to land in between.
Are used 2021 GMC Sierra 1500 prices going down?
Yes. The median asking price for a used 2021 GMC Sierra 1500 moved from $33,467 on Oct 25, 2026 to $33,064 on Nov 7, 2026 (-1.2%).
How many used 2021 GMC Sierra 1500s are for sale?
3,598 were listed at US dealers on Nov 7, 2026, 129 (3.6%) certified pre-owned. The most common trim is the AT4 (1,122 listings).
How long does a used 2021 GMC Sierra 1500 take to sell?
Half of the 2021 GMC Sierra 1500s listed today have been on the market 44 days or less.
Where are the most used 2021 GMC Sierra 1500s for sale?
Texas has the most (449 listings), followed by Florida, Michigan, California. More local supply means more cars to compare and more room to negotiate.
About this data
- Period
- Listings active on Nov 7, 2026 (snapshot)
- Filter
- Used and certified 2021 GMC Sierra 1500, all US states
- Counts
- 3,598 listings (129 certified pre-owned)
- Method
- Median, average and 25th–75th percentile asking price, odometer miles and days listed across active used and certified pre-owned 2021 GMC Sierra 1500 listings at US dealers. Change compares today's median with the same model year's median in our Oct 25, 2026 snapshot. Asking prices are what dealers list, not what buyers paid.
- Source
- Active used and certified listings at US dealers from licensed vehicle-data providers. Only aggregates are kept: counts, medians, averages and percentiles.
- Updates
- Refreshed from a new market snapshot on a regular schedule; last updated .
- Data
- Download JSON (the aggregates on this page)