One problem related to brake antilock control unit/module has been reported for the 1998 Chevrolet Blazer. The most recently reported issues are listed below.
I have a 1998 s-10 chevy Blazer that has an abs problem. The brakes are unable to stop the vehicle at a safe distance. 90% of the time the brake pedal resists pressure being put on it and pushes back. I had the abs fuse removed to disconnect the system and the problem ceases. My mechanic says the abs sensors will have to be replaced at a cost over $1000. 00. This vehicle is up for inspection this month and will not pass because of this problem.