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
GMC 1500 Pickup Windshield Wipers May Fail Due to Faulty Wiper Motor Control Board
GMC 1500 Pickup Problem
Average Mileage: 131,625 mi (78,000 mi - 200,000 mi)
Visitor, 1998 GMC 1500 Pickup, 165,000 mi
Wipers started to fail intermittently, and now don't work at all.
Visitor, 1997 GMC 1500 Pickup, 78,000 miRookie
It used to be you could tap the wiring harness that plugs into the side of the wiper motor and it'd start back up. Now they only turn on if the temperature is below 20 degrees, and once the truck warms up--they will quit. You get the buzzing/humming, also the wiring harness wiggles probably a centimeter fore & aft... I don't think it supposed to do that.
Mechanics want to charge $150+ to fix it... apparently the part is only $40-50.00 at O'Rielly's/AutoZone.
Visitor, 1992 GMC 1500 Pickup, 160,000 mi
When turned on my wipers stop and start on full running or intermittent . What controls this type thing??? And where is it on the truck? Thanks Tim Williams anderson sc
Visitor, 1998 GMC 1500 Pickup, 200,000 mi
some times the wipers work fine then the next day they won't work at all
Visitor, 1997 GMC 1500 Pickup, 180,000 mi
replaced the wiper control board twice. Issue still remains
Visitor, 1997 GMC 1500 Pickup, 100,500 mi
Same problem no solution yet
same exact problem.who ever rides passager in my truck has to be the one too get out in the rain and tap on my box.it would bo nice to find out if my truck was one recalled.then maybe my friends will ride with me more. thank - you
Visitor, 1997 GMC 1500 Pickup
cracked control board
wipers come on but work the way they want doesn't shut off in the right position.
Visitor, 1996 GMC 1500 Pickup, 80,000 mi
Was satisfied by GM warranty repair