A bad relay switch will cause the windshield wipers to not turn off. Replace the relay switch and the windshield wipers should turn off.
remove the wipers, turn on wiper switch, turn off switch, reinstall wipers @ bottom position torque nuts enough to secure the arm. turn on switch readjust as needed.
Wiper motors have an internal switch that keeps the wipers running after you turn them off. The switch stays active until the wipers get to the "PARK" position and if the drivers wiper switch is off, then the wiper motor is turned off internally. I suspect the internal switch has failed. Unfortunately the switch cannot be easily replaced. Fortunately, wiper motors are not terribly expensive.
To turn on the wipers, you twist the indicator knobat the tip in a forwards fashion. To switch them off, you do the reverse and twist the tip backwards towards you. To turn on the wipers, you twist the indicator knobat the tip in a forwards fashion. To switch them off, you do the reverse and twist the tip backwards towards you.
I have the same problem in my caprice, what you need to do is just sit there and switch it to high for a few minutes, then eventually if you keep playing with it it will turn off when you switch it to the far left
These vans are notorious for this. Replacing the wiper switch will fix it. The wiper switch is the wiper and blinker control. (the entire black assembly on your steering column where you turn your blinker and wipers on) contact me a sideburns2009@gmail.com
check your wiring to the motor, if you have a hot lead on it, figure out why.
The windshield wiper switch is broken which is located on the windshield wiper motor. You need to replace the whole motor to fix this.
Need a new switch.
It may be a bad wiper switch
the wiper switch is probably broken internally or shorted out.
Either a short to power in the circuit or a faulty switch.