Wipers have a mind of their own. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72timemachine · 05-09-2019, 04:25 PM

I'm sure I am not alone with this problem. When turning on the wipers on my 1990 GMC 2500 single cab, they do not always work in the speed I select and when I go to turn them off, I sometimes have to turn off the ignition to get them to stop.

On top of this mess, the windshield washer motor does not work atop the lever when you push it forward. I jumped out the motor to the battery and the motor does work so I am thinking the wiper control lever assembly is either haunted or shot. Any thoughts?

Thank you for any help.

Tom · 05-09-2019, 06:38 PM

Wiper circut board under the hood.

Redneck Rydes · 05-09-2019, 08:24 PM

Had the same problem with my 1994,go get a new circuit board, bolts onto the wiper motor,easy to do.

Kim57 · 05-09-2019, 08:38 PM

You can remove it and look for some bad solder joints.
I did that with mine and just touched them with a hot iron and it has worked fine since.
Been a couple of years now.
Kim

95 S_Trucker · 05-09-2019, 09:31 PM

88-90 had a different wiper motor/circuit board. The circuit board is no longer available for the 88-90 trucks, but the 91+wiper motor is a direct swap. It will plug right in.

karlbenz · 07-11-2021, 09:49 PM

Quote:

Originally Posted by Redneck Rydes

Had the same problem with my 1994,go get a new circuit board, bolts onto the wiper motor,easy to do.

Thanks. Thought mine was possessed

straight6chevyguy · 07-13-2021, 11:54 PM

Had the same problem on my 1998 c1500.
Bad solder joints on circuit board. I just reflowed the joints and it's been good for a while now.
If you don't want to mess with it you can buy a new board, I don't think there to expensive.

**special-K** · 07-14-2021, 08:53 PM

Mine's been acting up for a while now. I have the circuit board, just haven't put it in. I have to clear my windshield a few times before topping out of the valley in the morning. I hit the momentary mode and if it's acting up I get 7 swipes. Not 6, not 8, 7 every time. Other symptoms are put them on intermittent and they end up deciding to run fulltime at some point. Sometimes they don't park right. It takes a few tries. But it's a Chevy. Been that way about a year now, still gets me where I need to go. Still have wipers

**Already Gone** · 07-15-2021, 02:37 AM

Learned about this wiper cut out thing on a 1997 Silverado coming back from Las Vegas was 80 degrees when I left Vegas and hit one of the those common come out of nowhere blizzards just after coming off of the Arizona I15 and into Utah. Semis all over the road and I had no wipers. First and only time in my life I pulled off the road to spent the night and did in Beaver Utah. .Next morning no blizzard so headed out and 30 miles up the road was as clear and clean as a summer day and was clear all the way home. If I buy a GMT 400 now the first thing I do is put in a new pulse board.

**Ironhorse** · 07-15-2021, 12:30 PM

Yup, had same issue on our previous '99 Tahoe with same symptoms. Would not run always on speed selected and not always park correctly. Replaced the pulse / circuit board in the wiper for under $30. Not hard to do.

Just call me Sean · 07-15-2021, 12:52 PM

I had to change the one on my G20. The wiper motor is inside behind the dash all the way up top.

61_FL_Apache · 07-21-2021, 02:13 PM

Same as all the above. I just swapped mine a month or so ago.

Redneck Rydes · 07-21-2021, 07:34 PM

If I could buy one of these for the female species that would be worth more than 30 bucks after 25 years they still have, well you know! LOL!

05-09-2019, 04:25 PM	#1
72timemachine Registered User Join Date: Oct 2008 Location: los angeles ca Posts: 210	Wipers have a mind of their own. I'm sure I am not alone with this problem. When turning on the wipers on my 1990 GMC 2500 single cab, they do not always work in the speed I select and when I go to turn them off, I sometimes have to turn off the ignition to get them to stop. On top of this mess, the windshield washer motor does not work atop the lever when you push it forward. I jumped out the motor to the battery and the motor does work so I am thinking the wiper control lever assembly is either haunted or shot. Any thoughts? Thank you for any help.

05-09-2019, 06:38 PM	#2
Tom driving is in my blood Join Date: Dec 1999 Location: Mesa AZ Posts: 5,691	Re: Wipers have a mind of their own. Wiper circut board under the hood. __________________ -78 c10 short/step: 388cid, M20, 5/5 drop, lots more. Playtoy and first vehicle. -98 c1500 x-cab: 5.7L, 17" rims, 5/6 drop, flowmaster, helper bags,NBS rear disk brakes. -02 Suburban 4x4: leveled front -CBR600F4i, CBR600RR, CBR1000RR, and standup skis DISCLAIMER: I cant spell for the life of me.

05-09-2019, 08:24 PM	#3
Redneck Rydes Registered User Join Date: Feb 2016 Location: Trenton,Ontario & South Carolina Posts: 755	Re: Wipers have a mind of their own. Had the same problem with my 1994,go get a new circuit board, bolts onto the wiper motor,easy to do.

05-09-2019, 08:38 PM	#4
Kim57 Registered User Join Date: Aug 2007 Location: Corona, California Posts: 7,998	Re: Wipers have a mind of their own. You can remove it and look for some bad solder joints. I did that with mine and just touched them with a hot iron and it has worked fine since. Been a couple of years now. Kim __________________ My build thread http://67-72chevytrucks.com/vboard/s...d.php?t=283107

05-09-2019, 09:31 PM	#5
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,178	Re: Wipers have a mind of their own. 88-90 had a different wiper motor/circuit board. The circuit board is no longer available for the 88-90 trucks, but the 91+wiper motor is a direct swap. It will plug right in.

07-13-2021, 11:54 PM	#7
straight6chevyguy Registered User Join Date: Dec 2018 Location: yamhill OR Posts: 785	Re: Wipers have a mind of their own. Had the same problem on my 1998 c1500. Bad solder joints on circuit board. I just reflowed the joints and it's been good for a while now. If you don't want to mess with it you can buy a new board, I don't think there to expensive. __________________ 1965 chevy c20 292 4speed http://67-72chevytrucks.com/vboard/s...d.php?t=777601 1976 chevy c10 250 4speed http://www.67-72chevytrucks.com/vboa...d.php?t=787037 1998 chevy c1500 4.3L 5speed (My current driver) 2002 Chevy s10 4.3L auto 4x4 1971 mercury monterey wagon 400 auto To many projects!

07-14-2021, 08:53 PM	#8
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,863	Re: Wipers have a mind of their own. Mine's been acting up for a while now. I have the circuit board, just haven't put it in. I have to clear my windshield a few times before topping out of the valley in the morning. I hit the momentary mode and if it's acting up I get 7 swipes. Not 6, not 8, 7 every time. Other symptoms are put them on intermittent and they end up deciding to run fulltime at some point. Sometimes they don't park right. It takes a few tries. But it's a Chevy. Been that way about a year now, still gets me where I need to go. Still have wipers __________________ "BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ Last edited by special-K; 07-15-2021 at 05:14 AM.

07-15-2021, 02:37 AM	#9
Already Gone 70+ ( Old Skool Club ) Join Date: Nov 2003 Location: Saskatoon, Saskatchewan ,Canada Posts: 9,073	Re: Wipers have a mind of their own. Learned about this wiper cut out thing on a 1997 Silverado coming back from Las Vegas was 80 degrees when I left Vegas and hit one of the those common come out of nowhere blizzards just after coming off of the Arizona I15 and into Utah. Semis all over the road and I had no wipers. First and only time in my life I pulled off the road to spent the night and did in Beaver Utah. .Next morning no blizzard so headed out and 30 miles up the road was as clear and clean as a summer day and was clear all the way home. If I buy a GMT 400 now the first thing I do is put in a new pulse board. __________________ 1972 C10 Custom/Deluxe 613 Highlander 406/700R4 1999 White Tahoe LS 4x2 with Z56 Police Package 1992 K1500 GMC Suburban Members I have personally met: MusicMan70 - HeavyD - ChewyChevy67 - StingRay -71SWB4x4 - 67 Burb - DeadheadNM - too much stuff - bc65 - das601 " Circumsatances Do Not Change Responsibility " " The Sky is not the Limit, Your Mind is." Marilyn Monroe .. RIP Charlie Watts 1941 - 2021

07-15-2021, 12:30 PM	#10
Ironhorse Senior Member Join Date: Jul 2001 Location: Wellington, Ks Posts: 10,015	Re: Wipers have a mind of their own. Yup, had same issue on our previous '99 Tahoe with same symptoms. Would not run always on speed selected and not always park correctly. Replaced the pulse / circuit board in the wiper for under $30. Not hard to do. __________________ 1971 Chevy 1/2T 4x4 LWB 350 V-8 Was sm465-now 350TH/np205 Tilt, Tach, Towhooks Original Truck AM/FM Wellington, Ks

07-21-2021, 02:13 PM	#12
61_FL_Apache Who Me? Join Date: Sep 2010 Location: Royal Palm Beach, FL Posts: 4,065	Re: Wipers have a mind of their own. Same as all the above. I just swapped mine a month or so ago. __________________ Steve 1997 Tahoe LT 4D 2WD (DD) 1961 Apache 10 (sold) 1965 C10 Stepper (sold)

07-21-2021, 07:34 PM	#13
Redneck Rydes Registered User Join Date: Feb 2016 Location: Trenton,Ontario & South Carolina Posts: 755	Re: Wipers have a mind of their own. If I could buy one of these for the female species that would be worth more than 30 bucks after 25 years they still have, well you know! LOL!



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