[Hood Scoop]

On the '97 GMC Jimmy, for a few months now, windshield wipers would "stick" every once in a while. By stick I mean they would stop and a humming noise could be heard from the wiper motor. this would be a momentary thing and they would take off again. Yesterday, they stuck and stayed stuck. After a little tugging back and forth (and getting soaked) the arms "caught" and started again, only to wipe once and stop again with humming resumed.

I was planning to replace the wiper motor tomorrow, but wanted another opinion to make sure this was motor and not pulse board. With the humming, I thought the motor was sticking and was done. But didn't know if a faulty pulse board would cause this problem. Any thoughts? Thanks!

 

[doh]

The pulse board failing, is pretty common. But being a 97, I would go ahead and replace the whole motor.

 

[tom3]

The board problem would probably be a loose connection at a solder joint, pretty easy to spot if so. If it all looks fine I'd replace the whole deal to be sure.

 

[nicolet]

Do a tap test with the head of a screwdriver & if it works again...the board...

Likely the issue, I'd start there as they are not usually included with a motor...

 

[motorman]

my 88 silverado wiper will not shut off sometimes and the washers do not work. what do i need to do to fix this ????

 

[nicolet]

my 88 silverado wiper will not shut off sometimes and the washers do not work. what do i need to do to fix this ????

Same thing...try a circuit board first...assuming you have delay wipers...:yup:

 

[Hood Scoop]

I just replaced both parts. Good as new!

 

[nicolet]

I just replaced both parts. Good as new!

Both??? Kind of expen$ive....


I can't tell you the last time I sold a wiper motor itself for one of those...8 of 20 times it's the pulse board itself.

Well, at least it buys you piece of mind, and that's 99% of the battle!

 

[01cavalier]

When I worked for customer service it was almost always the board, motor failures were uncommon, I dealt with a lot of these. At least it's an easy fix.

 

[slls]

It is a cheap fix, if you own a soldering gun and some solder.

 

[Triple-X08]

slap a board in it, or you can solder the break in the board

 

[98Silverado]

The wipers in my 98 Silverado have quit working everytime it rained for years, but a quick tap on the pulse board cover has always fixed it until a couple of days ago. After reading this thread I went and pulled the pulse board. After close inspection, I found a hairline crack in the solder joint closest to the connector. A little cleaning, a little solder, and the wipers work like a champ. Thanks for sharing your knowledge.

 

[sonjaab]

A cracked solder joint in the board is/was a common issue in full size GM trucks a few years back.
Plenty of pics and posts how to repair yourself on any GM truck forum.

 

[jabwelding325]

I have a 95 Chevrolet suburban k2500 I replaced the pulse board on my windshield wiper motor and worked when I tested it. Well a few days later I tried using it and they wouldn't engage. Even put a new fuse as well. Is there anything I'm missing somewhere? Thanks

 

[davester]

11 year old thread, and the participants haven't logged into the site in years. You might consider
-making a new thread with your info and problem
-testing where you are getting power and ground, and perhaps check that everything is connected right.

 

[jabwelding325]

Ok will do thanks for that brother.