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Windshield wipers no intermittent

7K views 2 replies 2 participants last post by  free_money 
#1 ·
I just recently acquired a 2000 gmc sierra and the truck only had a few minor problems which I have all fixed except this wiper issue. At first, the wipers only worked on high speed and would not function on any other speed. I read on tons of forums about the pulse motor board going bad and needing soldered or replaced. I took my circuit board out and noticed it had a burnt mark and one of the diodes was missing. I purchased a new pulse motor board from rockauto and now the low speed will work if I switch from high to low. I can't go straight to low but have to turn them on high first. The wipers also started working on the washer part too. So now my wipers still work on high, work on low if I go to high first then switch to low, and washer works. Still no intermittent at all. I checked the fuses and all is good there. Any suggestions?? New motor?
 
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