One problem related to suspension torsion bar has been reported for the 1998 Chevrolet Blazer. The most recently reported issues are listed below.
Vehicle would vibrate whenever driving. Inspected by dealer and was informed that nothing was wrong. Consumer had a independent repair shop inspect vehicle and was informed that the front end was loose approximately 11/2 - 2", and that was not normal. They also said the torsion bar, ideter arm, pitman arm, and both ball joints are unsafe. Seeking help from NHTSA in this matter.