1988 GMC Jimmy Specifications

The 1988 GMC Jimmy refers to two quite different SUVs offered. There is a K5 version, which is based on a full-size truck platform, and the S-15 version, a mid-size truck platform.

Engine Specifications

K5 Platform:

5.7 L V8 gasoline engine
Torque--300 lb-ft
Horsepower--210 hp
Displacement--5737 cc
Bore x Stroke--4.00 X 3.48 in
Compression Ratio--9.3:1

Optional 6.2 L V8 diesel engine
Torque--240 lb-ft
Horsepower--130 hp
Displacement--6212 cc
Bore x Stroke--3.98 X 3.82 in
Compression Ratio--21.3:1

S-15 Platform:

2.5 L In-line 4-cylinder gasoline engine
Torque--130 lb-ft
Horsepower--92 hp
Displacement--2475 cc
Bore x Stroke--4.00 X 3.00 in
Compression Ratio--8.3:1

Body Styles

K5 Platform:

All K5 Jimmys are two-door 4WD SUVs.

S-15 Platform:

The S-15 Jimmys are two-door 2WD SUVs.

Transmissions

K5 Platform:

The 5.7 L gasoline engine has a four-speed manual transmission as standard equipment, with a four-speed automatic as an option.
The 6.2 L diesel engine was only available with a four-speed automatic transmission.

S-15 Platform:

The S-15 Jimmy was was offered with a standard five-speed manual transmission, with a four-speed automatic transmission as an option.

Fuel Consumption

K5 Platform:

The 5.7 L gasoline engine has a fuel consumption rating of 13 mpg city and 15 mpg highway, with the four-speed manual transmission. The fuel capacity with this engine is 31 gallons.

The 6.2 L diesel engine has a fuel consumption rating of 17 mpg city and 21 mpg highway, with the four-speed automatic transmission. The fuel capacity with this engine is 32 gallons.

S-15 Platform:

The 2.5 L gasoline engine has a fuel consumption rating of 22 mpg city and 28 mpg highway, with the five-speed manual transmission. The fuel capacity with this engine is 20 gallons.

References

• MSN Autos: 1998 GMC Jimmy K5 Specifications
• MSN Autos: 1998 GMC Jimmy S-15 Specifications