Intm. Windshield Wipers. [Expired Topic]

RE: Intm. Windshield Wipers.

I don't know if this is the same problem but I had trouble with my 99 Suburban intermittant wipers. They would sometimes not be intermittant, sometimes stop, but most of the time they wouldn't turn off until I turned the car off. That was a real pain because it hardly ever just rains here. So, when there was some rain, I would be reluctant to put on my wipers for fear that when it dried in a few minutes I wouldn't be able to turn them off and they would keep scraping until I pulled over.

Anyway, there's some sort of control box mounted just at the back of the engine compartment on the firewall. I got a replacement part from the dealer (not expensive, I believe it was around $30). He told me they sell lots of them. I replaced the old part and that did it. I'm sorry this is not very technical, but maybe someone more knowledgeable can add to this.

RE: Intm. Windshield Wipers.

I have only heard of this being a known issue on certain late 90's Ford, not GMC products. Do you have one of the new "rain sense" sensor systems?

I don't have the rain sensor, that I know of. I've never had a Chevy do this either. It doesn't really cause any harm, but man...it annoys the dickens out of me. They shut off when I turn them off. They even have the same speed interval that they are set on. They just stop at various stages of the wipe cycle.... It has a wiper motor from NAPA.....could have been a problem for the previous owner.??? Is the motor what tells tells the wipers how far to go, or is there something else that tells the motor how far to go.?? I hope this makes sense, because, I don't know how else to explain it.......

Well, it sounds like a short somewhere in the control unit, not the motor. If it were the motor, it would eventually burt itself out I would think, or it would NOT run when you want it to ... not speed up or whatever.

I have seen the wiper-control unit go bad and cause wipers to come on and off at will something...again, this was in a Ford truck though.

I'm looking a bit, don't see anything on it. I work with a woman who's husband is a GM vendor, he's at the Arlington plant all the time, I'll ask him when I see him.

Is the wiper control unit in the column.??? Is it easy to replace..???? It rained on me last night, and the wipers did fine on slow speed. No intermttent wiper action. I just used the "mist" part, when it was barely raining.....

I had the same thing happen with mine, it is like nemopoppins said, $30.00
part and they called it a wiper motor modulator. I was having auto start
put into my 98 Suburban, so just had the dealer do it.

Hope this helps :? crappieaeg!

Check and make sure this problem was not a recall. There was a reacall on certain years, just don't remember what years.

http://www-odi.nhtsa.dot.gov/cars/problems/recalls/recallsearch.cfm

I didn't see it on there... But, I saw a couple of other things...does that stuff mean a recall or just what to look for when repairing the stuff listed..???? I SHOULD know this....

I looked at the service bulletins...

There is a place on there that has just the recalls, unless I am wrong, and I have been known to forget things.

They should have it listed as a recall if it was a recall.

Third one down on the left is just recalls.

Service bulletents are for the techs, to help with repairs and diagnosice(SP)

Ok. I told a mechanic buddy of mine about the problem, he said there was a recall on that particular problem. He just couldn't remember if it covered my year Cheby.....