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Old 04-07-2003, 03:25 PM   #1
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Windshield Wipers Running

My Classic 345 turns the windshield wipers on and off from time to time. I have heard of other GM products doing this, like my son's Astro van. Anyone know what to do about it?

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Old 04-07-2003, 03:36 PM   #2
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Here is a link to an aftermarket source of the motors and contolrs:

The system is based on grounds and that the motor will have 12 volts on one terminal or another to make it do what you want. It may be a bad switch, I know mine are poor to say the least.

Brett G
WBCCI #5501 AIR # 49
1978 Argosy 28 foot Motorhome

Wise men talk because they have something to say; fools, because they have to say something. -- Plato

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Old 04-07-2003, 04:16 PM   #3
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I vaguely remember a problem with the late 80's and early 90's wiper motors. Seems it was a bad printed circuit board which may have been made worse by water intrusion. I had a 93 Suburban and a late 80's Astro that had the problem. Not sure if an A/S mh uses the same components though? Been driving my Ford PSD for so long I have forgotten most of my GM knowledge.

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Old 04-07-2003, 07:15 PM   #4
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Asuming it's a GM intermitant wiper set up.......Hehe they do it. Our 79 Blazer does it when you pop the parking brake, slam the door, hit a pot hole. Some times it will go a week and not do it and sometimes it will do it 10 times in one day. It's usualy a problem with the Intermitant wiper control modual that should be under the dash very close to the colum. They did not have very long harness on them.
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1988 R20 454 Suburban.
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