156 for sale · 7 auction results · latest Apr 7, 2026
The median auction sale for the GMC Sierra 3500 SLT was $20,797 over the last three years. The median asking price is $47,939.
Where GMC Sierra 3500 SLT prices are heading, quarter by quarter.
Every sale and listing by mileage, the middle 50% of prices and how much 10,000 miles take off.
| Trim | Years | For sale | Median ask | Sold | Median sale |
|---|---|---|---|---|---|
| SLT Dually 4×4 Duramax | 2005 | — | — | 1 | $17k |
The state map, GMC Sierra 3500 SLTs listed below market now, every model year's sales and asking prices, and the latest results.