Riding to work this morning with my wife in her 98 Chevy Pickup. When she tried to turn on her wipers I heard a buzz behind the dash but the wipers didn‘t move. She turned the control on and off a few times and it made the same sound every time. On about the 4th or 5th try the wipers came on a worked fine the rest of the drive. Any ideas? I have a fair amount of mechanical ability but I rarely deal with electical issues and I‘ve never worked on wipers. By the way, she had used the wipers earlier in the trip and they worked fine so I know this didn‘t happen because they were stuck.
This does sound like a weak or dying wiper motor. Unless you find some kind of obstruction that might have impeded the motion of the wiper arms. I'd give her the once over and if you don't see anything where it shouldn't be then you might coinsider a replacement before the Winter season gets here. Good Luck!
The circuit board for the intermittent wipers is connected to the drive motor under the plastic cover.They are prone to going bad and can be replaced,some auto parts stores stock them.You can remove it and look carefully for a poor contact or solder joint that may be repaired by yourself.
Could be that your wiper motor is getting tired out and just needs replaced
