THE SPECS GUIDE

1988 GMC GMT-400

Find your trim. See what changes.

Compare recorded engines, drivetrains and specifications, then open the VIN pattern that matches your car.

Have a specific car in mind?

Use its full VIN to look up the vehicle and check the recorded specifications.

Find a matching pattern on this page, or continue to vehicle lookup.

SIDE BY SIDE

Compare the details

Choose up to three VIN patterns. Each column describes one recorded pattern.

Swipe the table sideways to compare vehicles. Specification names stay visible.

Specification C1500 1GTDC14K-J 4WD 1GTFK24K-J C1500 1GTDC14Z-J
Engine 5.7L 8-cyl 5.7L 8-cyl 4.3L 6-cyl
Drivetrain Not recorded Four-wheel drive Not recorded
Fuel Gasoline Gasoline Gasoline
Body Pickup Pickup Pickup
Doors 2-door 2-door 2-door
Median asking price $15,000 Not recorded Not recorded
Price observations 5 Not recorded Not recorded
Price sample updated Oct 25, 2026 Not recorded Not recorded

Missing data does not mean a feature is absent. Prices are advertised asking prices for each pattern’s own sample, not completed sale prices or a trim-wide average.

EXPLORE THE LINEUP

Find your GMT-400

Grouped by recorded trim, with engine and drive variants underneath. Open a variant to see every source pattern.

1988 GMT-400

2 DR K2500 4WD Standard Cab LB

1 VIN pattern
5L 8-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
2GTFK24H-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

C1500

10 VIN patterns
4.3L 6-cyl · Gasoline · 4x2 2 patterns · View specs
1GTDC14Z-J → 23 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

2GTDC14Z-J → 7 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

5.7L 8-cyl · Gasoline · 4x2 5 patterns · View specs
2GTDC14K-J → 12 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2GTDC19K-J → 2 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2GTEC14K-J → 4 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2GTEC19K-J → 17 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GTDC14K-J → 113 VINs in our data

Pickup

$15,000 median asking price

5 price observations · Updated Oct 25, 2026

5L 8-cyl · Gasoline · 4x2 3 patterns · View specs
2GTEC14H-J → 3 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2GTDC14H-J → 21 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

2GTEC19H-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

C2500

4 VIN patterns
4.3L 6-cyl · Gasoline · 4x2 1 pattern · View specs
1GTFC24Z-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

5L 8-cyl · Gasoline · 4x2 2 patterns · View specs
1GTFC24H-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2GTFC24H-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6.2L 8-cyl · Diesel · 4x2 1 pattern · View specs
1GTFC24C-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

C3500

5 VIN patterns
5.7L 8-cyl · Gasoline · 4x2 2 patterns · View specs
1GTGC34K-J → 7 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2GTGC39K-J → 2 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

7.4L 8-cyl · Gasoline · 4x2 3 patterns · View specs
1GTHC34N-J → 4 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2GDHC39N-J → 1 VINs in our data

Incomplete - Chassis Cab (Number OF Cab Unknown)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GTGC34N-J → 4 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

C3500 Extended Cab SB

1 VIN pattern
7.4L 8-cyl · Gasoline · 4x2 1 pattern · View specs
2GTGC39N-J → 4 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

Fleetside Extended Cab 155.5" WB

1 VIN pattern
5.7L 8-cyl · Gasoline · 4x2 1 pattern · View specs
2GTHC39K-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

K1500

2 VIN patterns
5.7L 8-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
2GTDK14K-J → 10 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

5L 8-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
2GTEK19H-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

K1500 Standard Cab LB 4WD

1 VIN pattern
4.3L 6-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
2GTDK14Z-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

K1500 Standard Cab SB 4WD

1 VIN pattern
6.2L 8-cyl · Diesel · Four-wheel drive 1 pattern · View specs
2GTEK14C-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

K2500

4 VIN patterns
5.7L 8-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
2GTFK29K-J → 15 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

5L 8-cyl · Gasoline · Four-wheel drive 1 pattern · View specs
1GTFK24H-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6.2L 8-cyl · Diesel · Four-wheel drive 2 patterns · View specs
2GTFK24C-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GTFK24C-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

K3500

4 VIN patterns
5.7L 8-cyl · Gasoline · Four-wheel drive 2 patterns · View specs
2GTGK39K-J → 3 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GDGK34K-J → 1 VINs in our data

Incomplete - Chassis Cab (Number OF Cab Unknown)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

7.4L 8-cyl · Gasoline · Four-wheel drive 2 patterns · View specs
2GTGK39N-J → 2 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GTGK34N-J → 4 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1988 GMT-400

Trim not recorded

14 VIN patterns
4.3L 6-cyl · Gasoline · Four-wheel drive 2 patterns · View specs
2GTFK29Z-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GTDK14Z-J → 5 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

5.7L 8-cyl · Gasoline · 4x2 4 patterns · View specs
1GDGC34K-J → 1 VINs in our data

Incomplete - Chassis Cab (Number OF Cab Unknown)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GTFC24K-J → 17 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GDHC34K-J → 2 VINs in our data

Incomplete - Chassis Cab (Number OF Cab Unknown)

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2GTFC29K-J → 8 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

5.7L 8-cyl · Gasoline · Four-wheel drive 4 patterns · View specs
1GTGK34K-J → 2 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GTFK24K-J → 32 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

2GTEK29K-J → 1 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

2GTFK24K-J → 12 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

5L 8-cyl · Gasoline · Four-wheel drive 2 patterns · View specs
2GTDK14H-J → 2 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

1GTDK14H-J → 16 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

6.2L 8-cyl · Diesel · 4x2 1 pattern · View specs
2GTEC14C-J → 2 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

7.4L 8-cyl · Gasoline · 4x2 1 pattern · View specs
2GTHC39N-J → 5 VINs in our data

Pickup

No qualifying asking-price sample for this pattern.

Limited record — some specifications may be missing.

Source: manufacturer specifications decoded through NHTSA vPIC, alongside VIN and listing records in our dataset. Trim groups are for browsing; shared labels do not establish identical equipment. Confirm options on the specific vehicle.

THE MARKET VIEW

What are 1988 GMT-400s listed for?

Explore model-year asking prices and available market history.

Explore prices →

BEFORE YOU CHOOSE

Go beyond the spec sheet

Equipment, fuel economy and safety results can vary with the vehicle’s engine, drivetrain and options.

Fuel economy

Match the engine and drivetrain to an EPA entry. A model-year fuel estimate may describe a different variant from yours.

Find the matching EPA vehicle →

Prices across model years

Compare current asking-price samples. Differences between model years are not a forecast of how one car will depreciate.

Asking-price history →