1989 GMC Pickup Specificationsby Mike Stechschulte
General Motors Company's GMC brand offered seven different versions of the 1989 GMC S15 pickup. Options included an extended cab in two-wheel-drive and four-wheel-drive formats; a regular cab with a short bed or long bed, each with two-wheel-drive and four-wheel-drive options; and the GMC S15 Pickup Special, which was a regular cab, short-bed, two-wheel-drive pickup. The S15's original manufacturer's suggested retail price was between $7,527 and $12,141.
Four models -- the Special regular cab, short-bed 2WD; the regular cab, short-bed 2WD; the regular cab, long-bed 2WD; and extended cab 2WD -- came standard with a 2.5-liter, 92-horsepower I4 engine. This engine produces 130 ft.-lbs. of torque, has a displacement of 2,475 cc and a bore and stroke of 4.00 by 3.00. It has a compression ratio of 8.3:1. The other three models -- the regular cab, short-bed 4WD; the regular cab, long-bed 4WD; and extended cab 4WD -- came standard with a 2.8-liter, 125-horsepower V6 engine. This engine produces 160 ft.-lbs. of torque, has a displacement of 2,835 cc and a bore and stroke of 3.50-by-2.99. It has a compression ratio of 8.9:1.
A five-speed manual overdrive transmission came standard on all models of the 1989 GMC S15 pickup. A four-speed automatic transmission was optional on all models except the Special.
All models offered a 20-gallon fuel tank except the Special, which offered a 13.2-gallon tank. Fuel economy with a manual transmission on four-wheel-drive models is 18 miles per gallon in the city and 25 miles per gallon on the highway. Fuel economy with a manual transmission on rear-wheel-drive models is 23 miles per gallon in the city and 27 miles per gallon on the highway.
Anti-lock brakes were standard on all models. There is standard seating for three, with optional seating of two or four, depending on the model. Head room is 39.1 inches, and leg room is 42.5 for all models