GMC S15 Pickup Select the Engine of the Vehicle: 1990   4 Cylinders, 2.5L liter   6 Cylinders, 2.8L liter   6 Cylinders, 4.3L liter 1989   4 Cylinders, 2.5L liter   6 Cylinders, 2.8L liter   6 Cylinders, 4.3L liter 1988   4 Cylinders, 2.5L liter   6 Cylinders, 2.8L liter   6 Cylinders, 4.3L liter 1987   4 Cylinders, 2.5L liter   6 Cylinders, 2.8L liter 1986   4 Cylinders, 2.5L liter   6 Cylinders, 2.8L liter 1985   4 Cylinders, 1.9L liter   4 Cylinders, 2.5L liter   6 Cylinders, 2.8L liter 1984   4 Cylinders, 1.9L liter   4 Cylinders, 2.0L liter   6 Cylinders, 2.8L liter 1983   4 Cylinders, 1.9L liter   4 Cylinders, 2.0L liter   6 Cylinders, 2.8L liter 1982   4 Cylinders, 1.9L liter   6 Cylinders, 2.8L liter < < BACK