Steering Knuckle: Inspection
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1987 GMC Safari, 1987 GMC S15 Pickup, 1987 GMC S15 Jimmy, 1987 GMC Cab & Chassis, and 1987 Chevrolet S10 Pickup. However, it is still accessible from the selected car via links, so may be relevant.
With ball joints and tie rod end detached, clean all dirt from steering knuckle. Inspect tapered holes in knuckle for out-of-round, deformation or damage. Replace steering knuckle if any of these conditions exist.