GMC GMT-400 prices
That's the median of 10 active 1988 dealer listings. 1988 is the only GMT-400 model year with enough live inventory to price right now.
◷ Updated October 28, 2026 ▤ National asking prices, refreshed daily
1988 GMC GMT-400 price spread
The bar spans the middle half of asking prices across 10 active 1988 listings; the tick marks the median. Open the year for trim, mileage and state detail.
Bars use the 25th–75th percentile of live dealer asking prices, excluding the top and bottom 2% to reduce extreme values; this does not verify title status or condition. National figures, updated October 28, 2026.
GMC GMT-400 engines and factory builds
Every GMC GMT-400 left the factory as one of a few thousand decoded configurations. These pages break them down by engine and by build sheet — the exact specification behind a VIN, not a trim name.
More GMC models
Sierra
$62,483
92,931 listings
Sierra HD
$84,204
37,401 listings
Acadia
$55,851
29,332 listings
Terrain
$40,944
26,654 listings
Yukon
$95,485
21,037 listings
Yukon XL
$98,778
15,968 listings
Typical asking price of each model's newest year we can price; the count covers every model year. All GMC prices →
Similar GMC models
Explore more GMC models and compare their asking prices by year.
GMC GMT-400 prices: common questions
How much does a GMC GMT-400 cost?
As of October 28, 2026, the typical asking price for a 1988 GMC GMT-400 is $16,000, based on 10 active dealer listings. Across every model year we can price (1988) we track 10 active listings.
Why do 1988 GMC GMT-400 prices range from $5,668 to $104,790?
The spread comes down to configuration and mileage: higher-mileage, base-configuration examples sit near the low end, while low-mileage and premium configurations reach the top. Half of all 1988 listings fall between $13,875 and $32,175.
How current are these prices?
They come from 10 listings that were active on dealer sites when we last refreshed this page, October 28, 2026. We exclude the top and bottom 2% of prices to reduce the influence of extreme values. This does not verify vehicle condition. These are dealer asking prices, not final sale prices, and exclude taxes and fees.
Shopping for this car?
Check individual VINs before you buy — decode the exact trim and mileage, see every active listing, and how each price compares to the local market.