# GMC Sierra Markets

> Live inventory, generation markets, and pricing context for the GMC Sierra (1973–2018).

- **Canonical URL:** https://www.garagescout.ai/markets/gmc/sierra
- **Active markets tracked:** 6
- **Live listings (verified):** 55
- **Live auctions:** 11
- **Sold, last 12 months:** 226
- **Recorded sales:** 615
- **Data as of:** October 18, 2026 (latest listing update or sale; 2026-10-18T11:46:08.052Z)
- **Make page:** https://www.garagescout.ai/markets/gmc

## Generation markets

- [Rounded Line (1973–1987)](https://www.garagescout.ai/markets/gmc/sierra/rounded-line): 8 live
- [GMT400 (1988–1998)](https://www.garagescout.ai/markets/gmc/sierra/gmt400): 16 live
- [GMT800 (1999–2006)](https://www.garagescout.ai/markets/gmc/sierra/gmt800): 7 live
- [GMT900 (2007–2013)](https://www.garagescout.ai/markets/gmc/sierra/gmt900): 2 live
- [K2XX (2014–2018)](https://www.garagescout.ai/markets/gmc/sierra/k2xx): 2 live
- [T1XX (2019+)](https://www.garagescout.ai/markets/gmc/sierra/t1xx): 20 live

## Sierra sale prices by generation

Median sale price over the last 12 months. A range runs from the lowest to the highest variant median.

| Generation | Sales | Median sold |
| --- | ---: | --- |
| Rounded Line | 3 | $34,100 |
| GMT400 | 55 | $17,000 |
| GMT800 | 72 | $19,804 |
| GMT900 | 11 | $17,750 |
| K2XX | 13 | $32,500 |
| T1XX | 22 | $52,225 |

## Market highlights

- **GMC Sierra (GMT800):** 7 live listings
- **GMC Sierra (T1XX):** 20 live listings
- **GMC Sierra (GMT400):** 16 live listings

## Frequently asked questions

### How many GMC Sierra cars are for sale right now?

As of October 18, 2026, GarageScout lists 55 GMC Sierra cars for sale across 6 markets, from the auctions and dealers it monitors.

### Which GMC Sierra generations does GarageScout track?

GarageScout has a market for 6 generations of the GMC Sierra: Rounded Line (1973–1987, 8 for sale); GMT400 (1988–1998, 16 for sale); GMT800 (1999–2006, 7 for sale); GMT900 (2007–2013, 2 for sale); K2XX (2014–2018, 2 for sale); T1XX (2019–present, 20 for sale). Each generation's market lists its live cars and recorded sales.

### How much does a GMC Sierra sell for?

Median sale price over the last 12 months, by generation: Rounded Line, $34,100; GMT400, $17,000; GMT800, $19,804; GMT900, $17,750; K2XX, $32,500; T1XX, $52,225.

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Browse all GMC Sierra markets: https://www.garagescout.ai/markets/gmc/sierra