wipers go with switch turned off

[black dawg]

Today in my 91 burb, every time I turn the ignition on the wipers make a few passes and then park. Any ideas? Wiper switch is off, and I messed with it for awhile with no change. Wipers function normally with switch turned on.

 

[brans87]

pulse board more then likely. 96 body style where famous for that same problem.

 

[Blue85]

It's the little delay module mounted on the bottom of the column. There is a replacement available from Dorman, but I think it's $$. You can source a used one or ask somebody you know that's good with electronics. Sometimes it's just a simple diode or something that needs replacement.

You also have the option to bypass the module, as the input and output connectors are just male/female versions of each other. You will lose delay function, but should still have off/low/high/wash.

 

[black dawg]

THanks for the info. I was suspicious that module could cause it, hopefully I have one around here somewhere.