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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 29518
Experience:  GM Grand Master Technician 2007. 14 years experience.
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Chevy: 2500 hd..need to know why my wipers only work on high speed

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i own a 2002 2500 hd chevy silverado diesel truck.   i need to know why my wipers only work on high speed? what should i replace to correct this problem?
thank
eric
Welcome. Three are a couple of possible issues, the most likely being the wiper switch or the wiper module. There is a bit of testing. Using a test light, test the dark green and grey wires at the wiper motor for power in low. If there is, the replace the wiper module which is the wiper cover. No power is a bad switch or wiring then.
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Customer: replied 7 years ago.
i guess the module is located under the hood and under the cover which the wiper studs come through. correct?
Yes that is correct.
GM Tech (Cam) and 4 other Chevy Specialists are ready to help you