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As a GM tech, i have seen many wiper motor pulse boards go bad. they usually cause an itermitant condition, like the one you describe. It attaches to the front of the wiper motor with three torx screws. I bought the motor from an auto parts store. The motor ran $50 and came with the pulse board. The replacement was easy. It took longer to take the old one back for the core deposit.

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โˆ™ 2005-10-13 10:33:38
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Q: What is wrong with an S10 pickup if the windshield wipers work some time and not others even though the wiper motor sounds as if it is working fine?
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