Wrong section, maybe?

[Canadian Rigger]

Intermitent wiper problem, 96 GMC.

I've had wiper problems before but never experienced this.

Turning on the wipers they'll work but sometimes they won't shut off and just continue to go untill they decide thats enough or they won't start unless i put them on high, they'll sometimes stop in the middle of the window too rather then park when done their cycle too. Washers only work when they want to also, wipers may work normal but no washer?
When using just the mist fuction they are suppose to cycle 3 times, they may do it 10 times or more and then stop who know's where, other times they'll act as normal.

Replacing the board on other trucks usually solves the on/off problems but what about the washer?

 

[Brooklyn Tow]

Sounds like your multi function control switch (Directional, wiper, cruise) is on it's way out........Expensive item from dealer, I paid 2 hundred and change for one last year.
Try to find one in the junk yard, but my experience is they do not like to break up the column.

 

[THEFERMANATOR]

The board also controls the washer function. Have you checked for open recalls? GM recalled the earlier trucks to replace the wiper board on the 95's and IIRC the 96's. I know my uncles truck started doing what you describe and then the washer quit and then it all went. Replaced the board and worked like new again.

 

[SSduramax]

I would try the wiper module (the board) first before I tried anything else. they are pretty cheap.

 

[Canadian Rigger]

Guess i change the board and see what happens, didnt' think the washers were affected by it but wasn't sure. Thanks.

 

[steelydan]

The washers on my Suburban stop squirting when the wiper blades come to the full down position. Then they start squirting again when the blade starts to go up the window again. Pretty cool actually. So wiping and washing must be interlocked somehow. At least on a '99...

 

[ghitch75]

x2 on the board...replaced mine 30 buc's work like new...

 

[Turbine Doc]

Board was culprit in mine, and it was the relay on the board, not a cold solder joint, also not covered my year under warranty

 

[GMtech]

hey rigger check the terminals on the board for cracks in the solder, i have fixed many a circut board on these trucks by resoldering the terminals and they work like new and its free!!!

 

[DieselCash]

I made a post on this on the other site, with pictures and all. Those stupid boards are a GM product pain in the (fill in word here). If you need any assistance on replacing the board please ask I will help. They are a bulletine or free replacement(can not remember what it is called) on some Gm vehicles.
If someone knows what I am talking about please help me out, my brain is fryed from work tonight.
Thanks,

 

[Turbine Doc]

the bulletin only applies to certain models and years, which is dumb because they all use the same wiper motor/board