Bad Wiper motor or pulse board?

[Chris Mullen]

I have a 2000 k2500 classic, when I shut it off last night the wipers were vertical and I didn't think about that when starting it today with 6 inches of wet snow on it. 

Now the wipers won't park, they simply stop wherever they are when I shut the switch off, and they will only work on high. 

My switch was replaced less than 2 years ago and all of it's other functions still work. And my pulse board is also less than 2 years old so I'm not sure which it would be.

 

Help?

[OBS909VET]

Pulse board even replacements mess up after a couple years of extended use especially of plastic cover is not sealed during replacement with weather strip or silicone. Also double check the wiring on fender to and from washer motor Ive seen these cause damage to circuit that connects to pulse board park function....Good luck