1993 GMC K1500 Intermitent Wipers

I had the same issue with my 96 Z71 a year or two after buying it new. I replaced the bad circuit board with a new GM board and never had another problem. It only takes a few minutes to change it yourself. I don't recall the GM part being that expensive if you go that route. I'm sure any major autoparts store will carry it for a few bucks less. Hope this helps.

Napa part # RAY 49700PB Autozone part # 88136

Discount parts stores like AutoZone have it in the "Helps" section.

Al

Hi, This problem you're having I had many years ago (around 94) with my 91/C1500. You might take the suggestion about the soldering iron. I didn't even take the unit off the truck. I think there are three screws the hold the cover on and all you need to do is touch the iron to the connections. Most likely the problem is where the connector from the passenger sides connects to the board. You might even see the problem known as cold solder joint where they look dull when they should be clean and shiny. It might be worth the try!