2021 GMC Sierra SLT
3GTU9DET8MG379901
This 2021 GMC Sierra SLT is listed at $39,219 with 61,787 miles in Twin Falls, ID.
Market Price Range
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
Price history for this VIN
Asking prices recorded across 4 listing dates for VIN 3GTU9DET8MG379901, spanning 70 days.
Safety & ownership
EPA fuel economy (MPG)
Model-level data for the 2021 GMC Sierra from NHTSA (recalls, NCAP crash tests) and EPA fueleconomy.gov, refreshed July 28, 2026.
Active listings
Full listing history on VehiSales →| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Mountain West Motor - Twin Falls | Twin Falls, ID 83301 | $39,219 | 61,787 mi | 2026-07-31 |
| The Car Store Twin Falls LLC | Twin Falls, ID 83301 | $39,219 | 61,787 mi | 2026-05-22 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Mountain West Motor - Twin Falls | Twin Falls, ID 83301 | $39,999 | 61,787 mi | 2026-07-01 |
| The Car Store Twin Falls LLC | Twin Falls, ID 83301 | $39,500 | 61,860 mi | 2026-06-30 |
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