2021 GMC Sierra SLT
VIN
1GTU9DET9MZ158209
This 2021 GMC Sierra SLT is listed at $29,995 with 117,087 miles in O'Fallon, MO.
Market Price Range
Below market
$29,238
Typical price
$35,499
Above market
$42,993
Based on
39
comparable same-build listings.
below typical price
Market data as of July 27, 2026
Vehicle Decode
- Body
- Pickup
- Engine
- 3.0L · V6 · Diesel
- 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 |
|---|---|---|---|---|
| O'Fallon Motors | O'Fallon, MO 63366 | $29,995 | 117,087 mi | 2026-07-06 |
| O'Fallon Motors | O'Fallon, MO 63366 | $29,995 | 117,087 mi | 2026-05-10 |
| O'Fallon Motors | O'fallon, MO 63366 | $29,995 | 117,087 mi | 2025-10-17 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| O'Fallon Motors | O'Fallon, MO 63366 | $31,900 | 117,087 mi | 2026-03-29 |
| O'Fallon Motors | O'Fallon, MO 63366 | $31,000 | 117,087 mi | 2026-03-29 |
| O'Fallon Motors | O'Fallon, MO 63366 | $29,995 | 117,087 mi | 2026-03-29 |
| O'Fallon Motors | O'Fallon, MO 63366 | $31,900 | 117,087 mi | 2026-03-28 |
| O'Fallon Motors | O'fallon, MO 63334 | $31,900 | 117,087 mi | 2026-03-28 |
| Schicker Ford of Union | Union, MO 63084 | $30,891 | 116,936 mi | 2026-01-17 |
| Schicker Ford of Union | Union, MO 63084 | $34,911 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $32,911 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $31,896 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $31,896 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $31,896 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $30,891 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $30,891 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $30,891 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | 63084 | $30,891 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $30,891 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $30,511 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $31,911 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $31,911 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $31,511 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $29,911 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $29,911 | 116,936 mi | 2025-10-17 |
| Schicker Ford of Union | Union, MO 63084 | $30,891 | 116,936 mi | 2025-10-16 |
| Schicker Ford of Union | Union, MO 63084 | $30,991 | 116,936 mi | 2025-08-29 |
