I have a 1995 GMC vandure 2500 5.7l
with int't wipers..
wiperß won't stop...changed pulse board and wiper switch
any help would be great

I have the diagrams on my laptop. May be a problem with the motor itself.

Closed duplicate thread on this issue at: https://www.gmforum.com/everything-e...t-stop-313954/

Please do not start duplicate threads for the same issue. For more information: https://www.gmforum.com/introduction...-first-304557/

Been thinking about this. Sometimes this is bad ground. Sometimes this is a bad switch, like when the switch on the stalk starts getting worn out it does weird things.

Maybe try wiggling the different switches to see if you can provoke and/or repair the behavior.