intermittent wiper problem

[the 77]

I have a 85 c10 and the wipers will work when turned on to the always on positions. They don't work at all when in the "delay mode".

 

[chengny]

Under the lower steering column cover is the pulse wiper module. If everything else is okay, this is almost always the problem.

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[89Suburban]

Thanks for the report back.