The electrical contacts in the ignition switch may fail and result in erratic instrument panel gauge operation or illumination of the Check Engine Light. A failed ignition switch will require replacement.Google+
Car Problem Reports
Chevrolet Blazer Electrical Contacts in the Ignition Switch May Fail
Chevrolet Blazer Problem
Visitor, 1995 Chevrolet Blazer
95 blazer problems began with gauges not working right. next it would die while I was driving. It would restart but it was a hard start. next it began not starting, sometimes it would start. but now it just cranks & will not start & dash gauges do not work.