The windshield wipers may not work intermittently due to a faulty wiper motor control board. Our technicians tell us that lightly taping on the wiper motor when the fault occurs should temporarily get the wipers working again. Some vehicles were recalled for this problem and some were not. You will need to check with your local dealer to find out if a specific vehicle was included.Google+
Car Problem Reports
Chevrolet Blazer Windshield Wipers May Fail Due to Faulty Wiper Motor Control Board
Chevrolet Blazer Problem
Visitor, 1994 Chevrolet Blazer, 143,000 mi
Windshield wipers would stop working intermittently. Required tapping on the wiper motor box to restart, and sometimes even that failed.