2021 GMC Sierra SLT
VIN
3GTU9DED2MG403019
This 2021 GMC Sierra SLT is listed at $37,050 with 63,362 miles in Brookings, SD.
Market Price Range
Below market
$29,966
Typical price
$36,449
Above market
$42,266
Based on
254
comparable same-build listings.
above typical price
Market data as of July 26, 2026
Vehicle Decode
- Body
- Pickup
- Engine
- 5.3L · V8 · Gasoline
- Drive
- 4WD/4-Wheel Drive/4x4
- Doors
- 4
- Made by
- GENERAL MOTORS LLC
Safety
- ✗ Backup camera
- ✗ Blind-spot monitor
- ✗ Lane departure
- ✗ ABS
- ✗ Electronic stability
Active listings
Full listing history on VehiSales →| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| B & B Auto Sales | Brookings, SD 57006 | $37,050 | 63,362 mi | 2026-07-26 |
| B & B Auto Sales | Brookings, SD 57006 | $37,050 | — | 2026-07-20 |
| B & B Auto Sales | 57006 | $37,050 | 63,362 mi | 2026-07-02 |
| B & B Auto Sales | Brookings, SD 57006 | $37,050 | 63,362 mi | 2026-06-25 |
| B & B Auto Sales | Brookings, SD 57006 | $37,050 | 63,362 mi | 2026-06-24 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| B & B Auto Sales | Brookings, SD 57006 | — | — | 2026-06-27 |
| B & B Auto Sales | Brookings, SD 57006 | — | 63,362 mi | 2026-06-25 |
| B & B Auto Sales | Brookings, SD 57006 | — | 63,362 mi | 2026-06-24 |
| DeMarois Buick GMC Mercedes-Benz | Missoula, MT 59808 | $36,988 | 62,935 mi | 2025-07-29 |
| DeMarois Buick GMC | Missoula, MT 59802 | $38,988 | 62,973 mi | 2025-07-17 |
| DeMarois Buick GMC | Missoula, MT 59802 | $37,988 | 62,973 mi | 2025-07-17 |
| DeMarois Buick GMC | Missoula, MT 59802 | $37,988 | 62,973 mi | 2025-07-17 |
| DeMarois Buick GMC | Missoula, MT 59802 | $35,988 | 62,973 mi | 2025-07-17 |
| DeMarois Buick GMC | Missoula, MT 59802 | $36,988 | 62,973 mi | 2025-07-17 |
| DeMarois Buick-GMC Truck Mercedes-Benz | Missoula, MT 59808 | $35,988 | 62,935 mi | 2024-12-17 |
| DeMarois Buick GMC Mercedes-Benz | Missoula, MT 59808 | $36,988 | 62,935 mi | 2024-11-18 |
| DeMarois Buick GMC Mercedes-Benz | Missoula, MT 59808 | $35,988 | 62,935 mi | 2024-11-18 |
