1987 wipers only work on hi

[Dano93]

Have replaced the switch and module also the motor

 

[hatzie]

Do they park or just stop when you switch them off?

 

[Charlie]

 

[Crispy]

Howdy, read through this thread for some ideas that maybe you havent covered yet. Hopefully someone knowledgeable can chime in.

https://www.gmsquarebody.com/threads/wiper-delay-not-working-right-works-on-low-and-high.20899/

 

[Dano93]

Thank you for your help , hatze they just stop where they are when i turn it to low or any other point than hi

 

[Dano93]

After testing and research someone had installed a newer 7 wire switch so I when I replaced the switch I did the same thing not having the part number. I have the 5 wire switch on order . Also found out GM has discontinued this part

 

[Triv]

check your grounds and connections. I had that issue for awhile. I now use electrical connection cleaner and dielectric grease often.