2020 GMC Sierra SLT
VIN
1GTU9DED1LZ108069
This 2020 GMC Sierra SLT is listed at $23,354 with 170,589 miles in Alton, IL.
Market Price Range
Below market
$27,567
Typical price
$34,258
Above market
$39,008
Based on
56
comparable same-build listings.
below market price ($27567)
Market data as of July 27, 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 |
|---|---|---|---|---|
| Quality Buick | Alton, IL 62002 | $23,354 | 170,589 mi | 2026-07-24 |
| Quality GMC Buick | Alton, IL 62002 | $24,108 | 170,589 mi | 2026-07-22 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $23,354 | 170,589 mi | 2026-07-22 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $23,731 | 170,589 mi | 2026-07-16 |
| Quality GMC Buick | Alton, IL 62002 | $23,731 | 170,589 mi | 2026-07-02 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $23,354 | 170,580 mi | 2026-07-01 |
| Quality Buick Cadillac GMC | Alton, IL 62002 | $23,731 | 170,589 mi | 2026-07-01 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $23,354 | 170,589 mi | 2026-07-01 |
Former listings
| Dealer | Location | Price | Mileage | Listed |
|---|---|---|---|---|
| Quality Buick | Alton, IL 62002 | $23,354 | 170,580 mi | 2026-07-14 |
| Quality GMC Buick | Alton, IL 62002 | $23,731 | 170,580 mi | 2026-07-12 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $23,354 | 170,580 mi | 2026-07-07 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $22,977 | 170,580 mi | 2026-07-06 |
| Quality Buick | Alton, IL 62002 | $22,977 | 170,580 mi | 2026-07-06 |
| Quality Buick | Alton, IL 62002 | — | 170,580 mi | 2026-07-03 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | — | 170,580 mi | 2026-07-03 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | — | 170,580 mi | 2026-07-01 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | — | 170,580 mi | 2026-07-01 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $22,977 | 170,580 mi | 2026-07-01 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $22,977 | 170,580 mi | 2026-07-01 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $23,354 | 170,580 mi | 2026-07-01 |
| Quality Buick Cadillac GMC | Alton, IL 62002 | $23,354 | 170,589 mi | 2026-07-01 |
| Quality Buick GMC Cadillac | Alton, IL 62002 | $37,500 | 121,410 mi | 2023-03-02 |
