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01-01-2026, 02:23 PM
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#1 |
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Registered User
Join Date: Jun 2011
Location: Central OR
Posts: 830
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Wiper motor is weak.
89K5 Multi speed motor is slow on start up and has difficulty moving even light snow. It works OK on constant speed low but highest speed is not much faster. Are they serviceable?
Thanks.
__________________
1955 GMC 250 8 Flatbed 1971 C30 157" 350 4spd 10' Flatbed 81 GMC K30 CnC 9' Flatbed 454 T400 89 GMC Jimmy Stock https://67-72chevytrucks.com/vboard/...d.php?t=810958 71 LT1 Convertible, 72 Coupe 69 CJ5, 75 CJ6, 67 M715, 72 M35A2 Bobbed, 95 XLC2 |
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01-13-2026, 12:00 PM
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#2 |
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Registered User
Join Date: Feb 2013
Location: Cottonwood, Arizona
Posts: 1,397
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Re: Wiper motor is weak.
The motor on my 84 Sierra is the same. I asked on the gmsquarebody forum if I could take it apart and clean out the original grease as I think that's the problem. Both speeds on mine are the same:Slow! It was recommended to lube to linkage as well
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01-21-2026, 02:34 PM
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#3 | |
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Registered User
Join Date: Dec 2011
Location: Boise, Idaho
Posts: 724
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Re: Wiper motor is weak.
Quote:
I did not mess with relays/wire or dig into the cowl for lubricating the linkage. |
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01-22-2026, 08:54 AM
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#4 |
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Registered User
Join Date: Dec 2004
Location: Highland, IN
Posts: 2,353
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Re: Wiper motor is weak.
IF you pull apart and regrease, be sure to look into low temp grease
__________________
Chris _______________________________ 1979 Chevy Stepside SPORT 2018 Chevy Silverado, 39 years apart  My build 2008-2016. http://m.imgur.com/a/bURrE |
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