2021 GMC Sierra AT4
3GTU9EET8MG391777
This 2021 GMC Sierra AT4 is listed at $30,473 with 126,258 miles in National City, CA.
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 7 listing dates for VIN 3GTU9EET8MG391777, spanning 5 years 1 month.
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 |
|---|---|---|---|---|
| Honor GMC | National City, CA 91950 | $30,473 | 126,258 mi | 2026-08-11 |
| Honor Buick GMC | National City, CA 91950 | $30,473 | 126,258 mi | 2026-07-18 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Honor GMC | National City, CA 91950 | $30,573 | 126,258 mi | 2026-08-07 |
| Honor Buick GMC | National City, CA 91950 | $30,988 | 126,258 mi | 2026-07-17 |
| Temecula Valley Buick GMC | Temecula, CA 92591 | $54,535 | — | 2021-07-01 |
What would this 2021 GMC Sierra AT4 cost per month?
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