'97 Riveria wipers wont turn off
 

Hi, I have a 97 Riveria and the wipers will not turn off. All the other functions on the switch work. I am wondering if this is the switch or the motor or maybe the relays. Also wondering if it is the switch do I really have to by the entire switch or can I just replace the switch for the wipers only? Any help will be appreciated.

Of the few times I came across that problem there was a bad ground at the wiper motor where it is mounted.