1989 Cheyenne 1500 Wiper Relay? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

3drburb · 12-30-2023, 11:59 PM

After about 20 years of owning this truck and using it mainly for dump runs or to haul stuff in the Spring and Summer, I was driving it this week in the rain only to notice that my wipers do not have a low speed.

Is this normal?

Is there a common fix, and or what are you all using for an aftermarket intermittent wiper relay, if that will fix it?

I am thinking if it's not fixed soon, I will forget about it for a couple years.

Thanks in advance.

3drburb · 12-31-2023, 10:50 AM

I checked out You-Tube only to learned that this and other wiper issues is common problem for these years, so hopefully it should be fixed with a newer style replacement motor.
Thanks.

On a side note, I forgot how much space and leg room these cabins have compared to the earlier years.

**special-K** · 12-31-2023, 11:15 AM

Swap out the wiper control module with a new one. That is the part between switch and motor that controls wiper functions

3drburb · 12-31-2023, 06:36 PM

Quote:

Originally Posted by special-K

Swap out the wiper control module with a new one. That is the part between switch and motor that controls wiper functions

Thanks for information. Just called the local parts store after reading this and they will have one in for me soon.

**special-K** · 01-01-2024, 08:40 AM

I hope that helps.

95 S_Trucker · 01-02-2024, 03:16 PM

The 88-90 wiper pulse board is not produced anymore. You cannot install the newer pulse board onto the old wiper motor. If you don't have the newer wiper motor already, I would get one. It will come with a new pulse board on it.

3drburb · 01-02-2024, 07:45 PM

Quote:

Originally Posted by 95 S_Trucker

The 88-90 wiper pulse board is not produced anymore. You cannot install the newer pulse board onto the old wiper motor. If you don't have the newer wiper motor already, I would get one. It will come with a new pulse board on it.

So, I should be good with the purchase of a 92 wiper motor?
Thanks.

**special-K** · 01-03-2024, 09:13 AM

Great helpful information here. I'm surprised no one makes these, though. There's no shortage of these trucks in use daily, let alone them becoming popular classics. My '99 Sonoma needs one. There are four choices from four companies on Rock Auto offering

95 S_Trucker · 01-03-2024, 09:28 AM

Quote:

Originally Posted by special-K

Great helpful information here. I'm surprised no one makes these, though. There's no shortage of these trucks in use daily, let alone them becoming popular classics. My '99 Sonoma needs one. There are four choices from four companies on Rock Auto offering

The pulse boards for the new design wiper motor that started in 91 are plentiful. Not 88-90.

**special-K** · 01-12-2024, 06:37 AM

Quote:

Originally Posted by 95 S_Trucker

The pulse boards for the new design wiper motor that started in 91 are plentiful. Not 88-90.

I did get that. I'm saying it's strange no replacement part companies make these. Plenty of 88-90s out there yet.

**Bob B.** · 01-12-2024, 11:46 PM

It's true, the circuit board is only available for '91 and newer. You can replace the motor assembly for '88-'90, you can usually find rebuilt for less than $100.

12-30-2023, 11:59 PM	#1
3drburb Registered User Join Date: Jul 2011 Location: Kent, WA. Posts: 915	1989 Cheyenne 1500 Wiper Relay? After about 20 years of owning this truck and using it mainly for dump runs or to haul stuff in the Spring and Summer, I was driving it this week in the rain only to notice that my wipers do not have a low speed. Is this normal? Is there a common fix, and or what are you all using for an aftermarket intermittent wiper relay, if that will fix it? I am thinking if it's not fixed soon, I will forget about it for a couple years. Thanks in advance. Last edited by 3drburb; 12-31-2023 at 12:18 AM.

12-31-2023, 10:50 AM	#2
3drburb Registered User Join Date: Jul 2011 Location: Kent, WA. Posts: 915	Re: 1989 Cheyenne 1500 Wiper Relay? I checked out You-Tube only to learned that this and other wiper issues is common problem for these years, so hopefully it should be fixed with a newer style replacement motor. Thanks. On a side note, I forgot how much space and leg room these cabins have compared to the earlier years.

12-31-2023, 11:15 AM	#3
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,859	Re: 1989 Cheyenne 1500 Wiper Relay? Swap out the wiper control module with a new one. That is the part between switch and motor that controls wiper functions __________________ "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 ~

01-01-2024, 08:40 AM	#5
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,859	Re: 1989 Cheyenne 1500 Wiper Relay? I hope that helps. __________________ "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 ~

01-02-2024, 03:16 PM	#6
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,187	Re: 1989 Cheyenne 1500 Wiper Relay? The 88-90 wiper pulse board is not produced anymore. You cannot install the newer pulse board onto the old wiper motor. If you don't have the newer wiper motor already, I would get one. It will come with a new pulse board on it.

01-03-2024, 09:13 AM	#8
special-K Special Order Join Date: Nov 2004 Location: Mt Airy, MD Posts: 85,859	Re: 1989 Cheyenne 1500 Wiper Relay? Great helpful information here. I'm surprised no one makes these, though. There's no shortage of these trucks in use daily, let alone them becoming popular classics. My '99 Sonoma needs one. There are four choices from four companies on Rock Auto offering __________________ "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 ~

01-12-2024, 11:46 PM	#11
Bob B. Senior Member Join Date: Aug 2005 Location: Los Angeles Posts: 1,457	Re: 1989 Cheyenne 1500 Wiper Relay? It's true, the circuit board is only available for '91 and newer. You can replace the motor assembly for '88-'90, you can usually find rebuilt for less than $100. __________________ 1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90.



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