Windshield Wipers May Fail Due to Faulty Wiper Motor Control Board on GMC 1500 Pickup

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.

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Average mileage: 134,527 (70,000–252,000)
10 model years affected: 1990, 1991, 1992, 1993, more1994, 1995, 1996, 1997, 1998, 1999
31 people reported this problem
16 people shared problem details
1998 GMC 1500 Pickup165,000
Wipers started to fail intermittently, and now don't work at all.
5 people like thisFlag inappropiate
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.
2 people like thisFlag inappropiate
1992 GMC 1500 Pickup160,000
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
2 people like thisFlag inappropiate
1993 GMC 1500 Pickup100,000
The wipers will work one time. The next, they won't. Then they will work. Very difficult to trouble shoot.
1 person likes thisFlag inappropiate
1998 GMC 1500 Pickup200,000
some times the wipers work fine then the next day they won't work at all
1 person likes thisFlag inappropiate
1993 GMC 1500 Pickup252,000
wiper works on high speed only
Sometimes wipers would not work. Took off motor cover on fire wall, looked at PC board. Found a cold solder joint for component on bd. Resoldered joint wipers now work fine. Before purchasing a new board.; check this problem out.
1991 GMC 1500 Pickup200,000
wipers turn on but stays on when i turn off mind of it own. never know what it going to do
Windshield wipers will start and not turn off. You have to turn off ignition and they stop where ever they are. Start the truck again and sometime they will cycle an return to the off position. They do not like to work in the rain. So entires in the wash mode. At first if you taped the motor they would work.
1997 GMC 1500 Pickup180,000
replaced the wiper control board twice. Issue still remains
1997 GMC 1500 Pickup100,500
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
cracked control board
wipers come on but work the way they want doesn't shut off in the right position.
Was satisfied by GM warranty repair
1992 GMC 1500 Pickup130,000
Wipers were intermittent or would completely stop. Diagnosed and repaired by mechanic.
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