97 corvette. wipers wont turn off

the park switch inside the wiper motor is failing you will need to replace the wiper motor assembly

Since the ignition switch has to kill the power to the wipers. Replace the wiper switch. Carbon build up inside the switch is why it won't turn off. You could take the wiper switch apart and clean up the tabs with sandpaper. Beware of springs though..

Wiper delay cycle had not completed when shut off.

I've diagnosed and repaired this problem twice on C5's. Both times I had to replace the wiper module (it's the printed circuit board mounted on the wiper motor).

I had the same thing on my Vett, it turn out to be the wiper motor, the circuit broad was bad in the wiper motor it self, replace it.

Sounds like a loose connection, Clean the fuse contacts. Sometimes lubricant and dirt gets on the contacts within the switch itself and this will interfere with power supply. Have you checked the wiper relay corrosion and wear on the relay contacts impair electrical connection. Brighten up contacts with fine sand paper and if the relay contacts are suspect, remove the cover and draw folded sand paper between the contacts until clean.

Sounds like a dead battery. However, I will tell you that these vehicles are very sensitive to voltage. Try cleaning the battery cables and tightening them properly.

Check to make sure you are getting power to the wiper motors. Also check relay. Either one could be bad.

fist turn on ignition and then turn on wipers untill they are up out of their resting place then turn off ignition. now actually you should be able to slide the blade off of the pin. if not then spray some wd40 in where te pin and spring is. now get a small screw driver and push down on the spring in the center of the blade and then you should be able to pull the blade off.
Good luck

Had the same problem with my 97 Jetta it turned out to be the ignition switch. No problems since