GMC R2500 Pickup Select the Engine of the Vehicle: 1989   8 Cylinders, 5.7L liter   8 Cylinders, 7.4L liter 1988   8 Cylinders, 5.7L liter   8 Cylinders, 7.4L liter 1987   6 Cylinders, 4.3L liter   8 Cylinders, 5.0L liter   8 Cylinders, 5.7L liter   8 Cylinders, 7.4L liter < < BACK