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10-25-2010, 11:37 AM
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#1 |
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Registered User
Join Date: Oct 2010
Location: Mocksville,NC
Posts: 419
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Wipers
On my 72 GMC 3500.I have one one speed.The switch is for two speeds.What would claues it to only work on slow?Is it the switch or the wiper motor?thanks Tony
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1991 GMC K2500 4X4 350/auto 1991 Chevy S10 ext cab. 1990 Chevy S10 1993 Chevy S10 Blazer 4dr 4.3 Vortex/Auto |
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10-25-2010, 11:43 AM
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#2 |
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Old Skool Club
 
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: Wipers
The wiper switch is easier to change.....my thinking is that if the wiper motor runs at all, it's probably okay.
Do the wipers only run on the first position or do you have to go to the second one? If it runs on the first position, but not the second, I vote switch. But, on the outside chance that doesn't fix it, a wiper motor would be the next stop.
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Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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10-25-2010, 11:48 AM
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#3 |
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Registered User
Join Date: Oct 2010
Location: Mocksville,NC
Posts: 419
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Re: Wipers
It runs at the same speed on either position
__________________
1991 GMC K2500 4X4 350/auto 1991 Chevy S10 ext cab. 1990 Chevy S10 1993 Chevy S10 Blazer 4dr 4.3 Vortex/Auto |
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10-25-2010, 11:54 AM
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#4 |
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Registered User
Join Date: Jul 2006
Location: Kunsan AB, South Korea
Posts: 187
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Re: Wipers
I vote switch as well. When my wiper motor went out, it made a growling noise and the wipers did not move. Plus, go with the easiest thing to change out first. That would be the switch. The motor is kind of bulky and heavy.
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10-25-2010, 12:00 PM
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#5 |
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Old Skool Club
Join Date: Jun 2001
Location: Benton, AR "The Heart of Arkansas"
Posts: 10,880
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Re: Wipers
Plus, to get to the wiper motor you gotta be "agile and flexible". It's up behind the radio and attached with three nuts.
__________________
Member Nr. 2770 '96 GMC Sportside; 4.3/SLT - Daily driven....constantly needs washed. '69 C-10 SWB; 350/TH400 - in limbo The older I get, the better I was. |
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10-25-2010, 01:33 PM
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#6 |
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Msgt USAF Ret
 
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,718
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Re: Wipers
see if this helps---------http://rmcavoy.freeshell.org/electrical.html
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VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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10-25-2010, 02:53 PM
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#7 |
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More Cowbell....
Join Date: Mar 2004
Location: Puckett, MS
Posts: 3,569
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Re: Wipers
If it runs only one speed, most likely it is HIGH. There are three wires on your switch. When these wires are grounded, things happen. Do this....pull the plug off the switch.
Then using a jumper wire, connect the wires in the harness to ground. One will make the washer work. (should be the center wire) Then ground the other two at the same time. This should create LOW speed. Then remove the ground from the wire that is at the top (all by itself). Leaving the bottom wire grounded should switch the motor to HIGH speed. Here is a link to a photo that might help a little...or make it worse?!?!? CLICK ME
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There once was a member from Puckett.....Who ( fill in the blank blank blank ) bucket Last edited by Putter; 10-25-2010 at 02:56 PM. |
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