2021 GMC Sierra AT4
1GTU9EET3MZ340221
This 2021 GMC Sierra AT4 is listed at $26,120 with 182,928 miles in Mansfield, TX.
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 price over time
Asking prices recorded across 9 listing dates for VIN 1GTU9EET3MZ340221, spanning 5 years 2 months.
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 |
|---|---|---|---|---|
| Texas Truck Barn LLC | Mansfield, TX 76063 | $26,120 | 182,928 mi | 2026-08-05 |
| Texas Truck Barn | Fort Worth, TX 76140 | $26,220 | 182,928 mi | 2026-06-18 |
| Texas Truck Barn, LLC | Fort Worth, TX 76140 | $25,995 | 182,928 mi | 2026-06-18 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Texas Truck Barn LLC | Mansfield, TX 76063 | $27,120 | 182,928 mi | 2026-07-24 |
| Texas Truck Barn | Fort Worth, TX 76140 | $27,220 | 182,928 mi | 2026-06-18 |
| Texas Truck Barn, LLC | Fort Worth, TX 76140 | $26,995 | 182,928 mi | 2026-06-18 |
| James Wood Autopark Denton | Denton, TX 76210 | $65,977 | 16,301 mi | 2021-12-30 |
| James Wood AutoPark | Denton, TX 76206 | $65,977 | 16,301 mi | 2021-12-30 |
| McKinney Buick GMC | McKinney, TX 75069 | $61,375 | — | 2021-05-31 |
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