# GMC Sierra (GMT400) Market Intelligence

> Live inventory, active auctions, and real-time pricing analysis for the GMC Sierra (GMT400).

### Overview
- **Make:** GMC
- **Model:** Sierra
- **Generation:** GMT400
- **Production Years:** 1988–1998
- **Canonical Market URL:** https://www.garagescout.ai/markets/gmc/sierra/gmt400
- **Data as of:** October 19, 2026 (latest listing update or sale; 2026-10-19T06:21:54.845Z)
- **Source Coverage:** Curated across Bring a Trailer, PCARMARKET, Cars & Bids, and vetted specialist dealers.

## Trailing 12-Month (TTM) Market Performance
- **Active Live Inventory:** 16 verified cars available
- **Active Live Auctions:** 4 live auctions with open bidding
- **12-Month Confirmed Benchmark Sales:** 56 completed transactions (2 non-factory builds excluded)
- **12-Month Median Sold Price (all variants):** $16,750
- **Current Live Asking Price Range:** $14,900 – $36,799
- **Current Live Asking Median:** $24,995

## Active Live Auctions
- **1988 GMC Sierra** | Current Bid: N/A | Venue: Mecum | Location: Fort Worth, TX | [View Auction](https://www.garagescout.ai/listings/1988-gmc-sierra-8ff4be5d)
- **1998 GMC Sierra 1500** | Current Bid: N/A | Venue: Mecum | Location: Fort Worth, TX | [View Auction](https://www.garagescout.ai/listings/1998-gmc-sierra-1500-9e2cf2f3)
- **1995 GMC Sierra 1500 SLE** | Current Bid: N/A | Venue: Mecum | Location: Fort Worth, TX | [View Auction](https://www.garagescout.ai/listings/1995-gmc-sierra-1500-sle-b14bdc51)
- **1994 GMC Sierra GT** | Current Bid: N/A | Venue: Mecum | Location: Fort Worth, TX | [View Auction](https://www.garagescout.ai/listings/1994-gmc-sierra-gt-1f103a91)

## Verified Live Inventory
- **1988 GMC Sierra** (1988) | Asking: N/A | 90,917 mi | automatic | Venue: Mecum | Location: Fort Worth, TX | [View Listing](https://www.garagescout.ai/listings/1988-gmc-sierra-8ff4be5d)
- **1998 GMC Sierra 1500** (1998) | Asking: N/A | 109,580 mi | automatic | Venue: Mecum | Location: Fort Worth, TX | [View Listing](https://www.garagescout.ai/listings/1998-gmc-sierra-1500-9e2cf2f3)
- **1995 GMC Sierra 1500 SLE** (1995) | Asking: N/A | Mileage N/A | automatic | Venue: Mecum | Location: Fort Worth, TX | [View Listing](https://www.garagescout.ai/listings/1995-gmc-sierra-1500-sle-b14bdc51)
- **1994 GMC Sierra GT** (1994) | Asking: N/A | Mileage N/A | automatic | Venue: Mecum | Location: Fort Worth, TX | [View Listing](https://www.garagescout.ai/listings/1994-gmc-sierra-gt-1f103a91)
- **1992 GMC Sierra** (1992) | Asking: $14,900 | 203,998 mi | automatic | Venue: Dealer inventory | Location: Denver, Colorado | [View Listing](https://www.garagescout.ai/listings/1992-gmc-sierra-5a7abfb9)
- **1994 GMC Sierra 1500 Stepside** (1994) | Asking: $14,995 | 71,800 mi | automatic | Venue: Dealer inventory | Location: La Vergne, Tennessee | [View Listing](https://www.garagescout.ai/listings/1994-gmc-sierra-1500-stepside-c6572fb4)
- **1995 GMC Sierra 1500 SLE** (1995) | Asking: $19,995 | 134,894 mi | automatic | Venue: Dealer inventory | Location: La Vergne, Tennessee | [View Listing](https://www.garagescout.ai/listings/1995-gmc-sierra-1500-sle-bef47be9)
- **1996 GMC Sierra 1500 LS 6 0** (1996) | Asking: $22,995 | 253,614 mi | automatic | Venue: Dealer inventory | Location: La Vergne, Tennessee | [View Listing](https://www.garagescout.ai/listings/1996-gmc-sierra-1500-ls-6-0-beafd2b6)
- **1994 GMC Sierra 1500 Short Box Injected** (1994) | Asking: $24,500 | Mileage N/A | automatic | Venue: Hemmings Classifieds | Location: MILFORD, Ohio | [View Listing](https://www.garagescout.ai/listings/1994-gmc-sierra-1500-short-box-injected-00c0f2bc)
- **1993 GMC Sierra 1500** (1993) | Asking: $24,995 | 139,713 mi | automatic | Venue: Dealer inventory | Location: La Vergne, Tennessee | [View Listing](https://www.garagescout.ai/listings/1993-gmc-sierra-1500-2fbda20c)

## Sales Ledger Preview
Showing the 5 most recent of 62 recorded sales (last 12 months).

| Date | Vehicle / Spec | Gearbox | Mileage | Sold Price | Marketplace |
|---|---|---|---|---|---|
| Oct 15, 2026 | Variant not identified | Automatic | 99,000 mi | $24,000 | Bring a Trailer |
| Oct 12, 2026 | Variant not identified | Automatic | 75,915 mi | $21,900 | Dealer inventory |
| Oct 1, 2026 | Variant not identified | Automatic | 100 mi | $24,500 | Hagerty Marketplace |
| Sep 24, 2026 | Variant not identified | Automatic | 129,584 mi | $31,900 | Mecum |
| Sep 23, 2026 | Variant not identified | Automatic | 1,062 mi | $30,800 | Mecum |

## Market Memory (Last 12 Months)
- **Benchmark Sales:** 56 completed transactions (6 non-factory builds excluded)
- **Earlier Sales on Record:** 98 since 2023
- **Interquartile Range (Middle 50%):** $10,938 – $24,125
- **Compound Annual Growth Rate (CAGR):** -22.1% (from the median of the first 3 sales)

| Calendar Year | Completed Sales | Median Price |
|---|---|---|
| 2025 | 12 | $17,125 |
| 2026 | 47 | $17,000 |

## Frequently Asked Questions

### What is the current market price of a GMC Sierra (GMT400)?

Based on 56 benchmark sales recorded over the trailing 12 months on GarageScout, the median sale price for the GMC Sierra (GMT400), across all variants, is $16,750. Current verified live asking prices range from $14,900 to $36,799 (median asking price: $24,995).

### How many GMC Sierra (GMT400) examples are currently for sale?

As of October 19, 2026, there are 16 verified GMC Sierra (GMT400) examples listed for sale across vetted specialist dealers and auctions on GarageScout, including 4 active live auctions with open bidding.

### How many GMC Sierra (GMT400) cars sold in the last 12 months?

GarageScout recorded 56 sales of the GMC Sierra (GMT400) in the trailing 12 months, counting confirmed sales only. Restomods, gearbox conversions and sales priced like deposits or placeholders are left out.

### What does a GMC Sierra (GMT400) sell for by model year?

Median sale prices over the trailing 12 months on GarageScout, across all variants, for model years with 3 or more sales: 1990 $23,250 (6 sales); 1992 $9,300 (3 sales); 1993 $16,250 (6 sales); 1994 $18,875 (10 sales); 1995 $15,000 (3 sales); 1996 $20,251 (4 sales); 1997 $20,800 (10 sales); 1998 $14,500 (8 sales).

### Where do GMC Sierra (GMT400) cars sell?

Of the 56 sales GarageScout recorded in the trailing 12 months, 40 on Bring a Trailer, 11 on Mecum, 2 on Barrett-Jackson, 1 on Cars & Bids, 1 on GAA Classic Cars and 1 on Hagerty Marketplace.

### Where does GarageScout's GMC Sierra (GMT400) market data come from?

GarageScout's GMC Sierra (GMT400) figures come from the listings and sales it has recorded on Bring a Trailer, Mecum, Barrett-Jackson, Cars & Bids, Hemmings Classifieds, 3 other sites and dealer inventories. Repeat sales of one car matched by VIN count once, and a median sale price is stated only where 3 or more sales in the trailing 12 months back it.

## Related Markets

- **Generations:** [GMT800](https://www.garagescout.ai/markets/gmc/sierra/gmt800), [GMT900](https://www.garagescout.ai/markets/gmc/sierra/gmt900), [K2XX](https://www.garagescout.ai/markets/gmc/sierra/k2xx), [Rounded Line](https://www.garagescout.ai/markets/gmc/sierra/rounded-line), [T1XX](https://www.garagescout.ai/markets/gmc/sierra/t1xx)
- **Model:** [All GMC Sierra markets](https://www.garagescout.ai/markets/gmc/sierra)
- **Make:** [All GMC markets](https://www.garagescout.ai/markets/gmc)

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*Data synthesized by GarageScout Market Intelligence. Preserving vehicle market memory across enthusiast auctions, specialist dealers, and private sales.*