Half of all used GMC Sierra 2500s sell within 36 days, against an all-vehicle median of 38 days — that is 2 days faster than the typical vehicle on an independent lot. Among heavy-duty pickups it ranks 1 of 8 for turn speed. A quarter move in under 17 days and a quarter take more than 76 — that spread is the part worth planning around.
median
sells in
the sample
miles
By model year
Age and turn time are not the straight line most dealers assume. The 2022 moves fastest at 29 days, while the 2023 sits for 53.
| Model year | Median days | Sales | Avg miles |
|---|---|---|---|
| 2025 GMC Sierra 2500 | 38 | 76 | 8,391 |
| 2024 GMC Sierra 2500 | 36 | 195 | 19,301 |
| 2023 GMC Sierra 2500 | 53 | 43 | 34,202 |
| 2022 GMC Sierra 2500 | 29 | 56 | 62,240 |
| 2021 GMC Sierra 2500 | 36 | 47 | 85,375 |
| 2019 GMC Sierra 2500 | 36 | 47 | 107,230 |
| 2016 GMC Sierra 2500 | 40 | 45 | 133,495 |
| 2015 GMC Sierra 2500 | 48 | 40 | 119,028 |
Model years with at least 40 recorded sales. Days on lot is the calendar gap between inventory entry and sale date.
Against the heavy-duty pickups it competes with
Average days on lot, sales since January 2024. Shorter is better. Minimum 150 sales per model.
Methodology
Days on lot is the number of calendar days between a vehicle being added to a dealership's inventory and its recorded sale date. That clock starts at intake, so on units that need work it includes reconditioning time. We exclude vehicles with no entry date, sales recorded before the entry date, and anything over 730 days — those are data-entry artifacts, not slow-moving inventory.
We report the median, not the average. Turn time has a long right tail: a handful of units that sit for a year or more drag the mean well above what a normal car does. Across every vehicle we track, the mean is 66.7 days while the median is 38. The median answers the question a dealer is actually asking, and the quartiles show the spread around it.
These figures come from aggregated, de-identified activity across independent dealerships that use AutoRaptor. We report only totals across many dealerships, never an individual dealership's results. No customer records, buyer information or dealership names are included.
We publish a model only at 150 or more sales, and a model year only at 40 or more. We do not publish gross profit figures, because the price fields in our data are incomplete and any margin we reported would be wrong.