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1992 GMC C1500 winshield wipers

Tiny
SAULGDADDY
  • MEMBER
  • 1992 GMC C1500
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 151,000 MILES
When I turn on the switch for my wipers sometimes they work and sometimes they do not. When they do work they only work at one speed and when I turn them off they stop right were they are. If I turn the switch on and they do not work I can still here the motor trying to move. Any advice?
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Wednesday, April 14th, 2010 AT 11:30 AM

1 Reply

Tiny
INTERNETMECHANIC
  • MECHANIC
  • 700 POSTS
I'd take the connector loose from the wiper motor, use jumper wires for voltage and ground, use voltage for high and low, one at a time. The black wire is ground, the wiring diagram shows the wire color for high and low. You can come off battery for voltage and ground. If the motor reacts the way it should, the problem may be in the wiper switch, itself. The info I looked at was two speed wiper, no intermittent. It could be the motor itself?


https://www.2carpros.com/forum/automotive_pictures/512072_gmc_wiper_motor_1.jpg

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Friday, April 30th, 2010 AT 4:04 PM

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