RepairPal Certified shops can diagnose and repair your 1993 Chevrolet Blazer. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
Circuit board on the wiper motors gave a bunch of trouble around that year.... can buy just that part.... Also, make sure the wiper motor itself is grounded... have seen them loose their ground circuit. ... Any of this make sense to you??