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73-87 Chevy _ GMC Trucks => Electrical => Topic started by: Burkhalter on April 04, 2019, 01:18:47 PM

Title: Washer pump
Post by: Burkhalter on April 04, 2019, 01:18:47 PM
I'm having troubles figuring out where my issue is with my washer pump. Initially I replaced the pump itself that did not fix it so I tore into the stearing column, removed the washer wiper switch tested it. It works. Asked my grandfather if he had any issues with it and he said it has worked intermittently since about 01 or 02. I don't have any blown fuses. It's an 85 k10.
Title: Re: Washer pump
Post by: Burkhalter on April 04, 2019, 02:58:26 PM
I think that I've found my faulty part. Now I need to what this is called. (https://uploads.tapatalk-cdn.com/20190404/f4f0db73e6c4286b1f4df8a079ebfdd2.jpg)

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Title: Re: Washer pump
Post by: Burkhalter on April 04, 2019, 03:04:45 PM
Ohms reading and the blown diode? (https://uploads.tapatalk-cdn.com/20190404/fcebddbde17bb3a5a848bbf21970bead.jpg)(https://uploads.tapatalk-cdn.com/20190404/880258c8d7bf595bed167198c0889acc.jpg)

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Title: Re: Washer pump
Post by: MIKE S on April 04, 2019, 06:33:26 PM
That is the wiper delay module. GM part # 15598496. Gm is currently out of stock but my locator shows many dealers that have them. Have you tried bypassing the module and plugging the two connectors together. I believe you can and it should work except for the delay portion.
Title: Re: Washer pump
Post by: Burkhalter on April 04, 2019, 07:01:51 PM
I'll try that.
Title: Re: Washer pump
Post by: Burkhalter on April 05, 2019, 10:18:36 AM
A jumper wire fixed it. Looking at the circuitry It's a straight shot across the board except for the diode which would be easy to wire in another into the jumper in the future.
Title: Re: Washer pump
Post by: bd on April 05, 2019, 12:35:35 PM
The capacitor mounted adjacent to the diode is bad, too.
Title: Re: Washer pump
Post by: VileZambonie on April 05, 2019, 05:38:07 PM
That is the wiper delay module. GM part # 15598496. Gm is currently out of stock but my locator shows many dealers that have them. Have you tried bypassing the module and plugging the two connectors together. I believe you can and it should work except for the delay portion.

AutoZone sells them too DR199
Title: Re: Washer pump
Post by: hatzie on April 06, 2019, 02:28:00 PM
The delay modules can usually be repaired with a half decent soldering station. 
Buy some modern replacements for the ancient electrolytic capacitors and a replacement power diode.  Bet it's a lot less than the $70 they're asking for the substandard Chinese replicas.