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 1500 Pickup Windshield Wipers May Fail Due to Faulty Wiper Motor Control Board
Chevrolet 1500 Pickup Problem
Average Mileage: 134,610 mi (11,900 mi - 284,558 mi)
Wipers run, but will not shut off.....must turn off key to stop wiper motor.
Visitor, 1992 Chevrolet 1500 Pickup, 50,000 mi
The wipers will only work on high, and nothing else. Even the window cleaner will not work. When i turn the switch anywhere but on high the wipers will stop wherever they are, even if that is all the way at the top. I have to time it to get them down in the right place.
Visitor, 1997 Chevrolet 1500 Pickup
the wipers either stop when being used or fail to turn on when activated. When in the fail condition you can hear the control box buzzing. If you open the hood and rap on the box with your knuckles the wipers will start again. They have done it about 5 time in the last 14 months. The shop has not been able to have it act up when they have it and if I leave it alone and drive in the probpem is gone when I arrive.
Wipers always come on--does not appear to be motor issue. Checked wiper control board and no bad or cold solders present. Wipers work in low and high but briefly in delay mode and then default to low setting. Takes a few minutes for wipers to cycle off and stop mid-cycle in middle of shut off.
Visitor, 1998 Chevrolet 1500 Pickup, 284,558 mi
Wipers will not work on delay, and will stop and start.
Visitor, 1990 Chevrolet 1500 Pickup, 141,000 mi
Wiper fuse appears fine. Wipers just stop working.
Visitor, 1995 Chevrolet 1500 Pickup
The real problem is that the board is not held tight up against the motor making a poor contact. The problem has been fixed Chevy has a recall that replaces the cover that holds the electronic board up to the motor.
Visitor, 1998 Chevrolet 1500 Pickup, 51,000 mi
I have the 2500 series. when I turn on wipers, they buzz and washer does not work either. today they work .someday they will not.
Had the sane problem on my 1997 silverado pickup. it easily replaced by anyone with average mechanical ability. Just take your time and be gentle when removing the plug.
Visitor, 1999 Chevrolet 1500 Pickup, 92,000 mi
Wipers would not turn on - typically when it was raining !
Moving connector would start wipers. At first one wiggle would do it. Then it would only go a couple of cycles before it would stop. Fixed by replaced wiper control board. Dealer told me there was no open recall. From all I have read this is a very common problem !