One problem related to front suspension stabilizer bar has been reported for the 1999 Chevrolet Silverado. The most recently reported issues are listed below.
Front suspension stabilizer bar link fell off on drivers side, passenger side would fall off if not checked and tightened to manufacturers torque specs. This is a 60k mile truck, never wrecked, dealer maintained, never off road, never abused, 70% highway miles, no suspension work ever done except shock replacement. Handling becomes unpredictable when one side comes loose, like on my truck.