Wiper motor replacement - The 1947 - Present Chevrolet & GMC Truck Message Board Network

st1 · 07-05-2018, 03:13 PM

Greetings to one and all. Hope the holiday has been good to everyone and all fingers are still attached. I replaced the wiper motor on my 78 GMC STEPSIDE since the current motor would not stop spraying water. The reman wiper motor from summit worked fine while I was testing it. Then it blew the fuse and another fuse and another fuse. I only switched motors, why is it blowing fuses? The reman wiper motor doesn’t run at all now. I put the original back on and now it’s not running either. It’s summer in N.C. and it will rain. I need dependable wipers, your help is appreciated. St1
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**hatzie** · 07-05-2018, 03:19 PM

Fuses are blowing when you power the wipers on?
Blowing out just as soon as you plug one in with the ignition on?
Does the fuse blow with the wiper motor plugs disconnected?

st1 · 07-05-2018, 03:20 PM

The fuses blow as I test the motor. Trying to get the arms in the correct parked position. The run I shut it off the don’t run again.

st1 · 07-05-2018, 03:24 PM

I am going to leave the fuse out reset the arms to the correct parked position then install a fuse and see what happens. I have reinstalled the motor that will not stop spraying water. I routed the hoses in a loop so as to not make a mess.
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st1 · 07-06-2018, 07:28 PM

So I had to put the old one back on. The reman unit will not run. I will send it back and get another one. Putting the grill back on and calling it done. Grill reinstalled due to another project (a/c charge and trianry switch install).

Thanks for the reply.
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st1 · 07-21-2018, 02:25 PM

Got the new reman wiper motor installed with some paint. Looks okay.
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st1 · 07-21-2018, 02:27 PM

Pics
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**rgunlock** · 07-23-2018, 11:35 AM

That looks really nice. Hope you get some years out of it. I recently replaced the wiper motor/pump on my 78 and it worked fine for a few weeks, then started squirting for as long as the wipers were on. Had to pull the water supply hose. I'm hoping to find a better one than O'Reilley's sells next time around.

**hatzie** · 07-28-2018, 03:29 PM

A Dorman 603-131 tank with the AC Delco 89001120 pump are the stock 85/86 CK parts. IIRC the tank fit on my 1976 washer tank mount.

Rather than the Tee you can use a Wye in the washer fluid lines to avoid the U shaped bend. VW # 1J0955873D will work if you can't find one on the HELP rack.

The 98-07 GMT800 washer pump and reservoir GM 1288113 will likely fit next to the radiator on the radiator support. They hold around a gallon of fluid. You'll need to liberate the Metripack connector from your donor but these look fairly attractive to me.
The other part that might be attractive is the combination Washer and rad overflow tanks off the later model GM Astro Safari vans.
Take your tape measure to the Pick-N-Pull.

**MikeB** · 07-28-2018, 06:12 PM

Quote:

Originally Posted by hatzie

A Dorman 603-131 tank with the AC Delco 89001120 pump are the stock 85/86 CK parts. IIRC the tank fit on my 1976 washer tank mount.

That's good to know.

Quote:

Rather than the Tee you can use a Wye in the washer fluid lines to avoid the U shaped bend. VW # 1J0955873D will work if you can't find one on the HELP rack.

Wow, $12 for that little guy. My setup works as good or better than the Rube Goldberg OE pump, so I'll stick with my tee fitting.

Forgot to say the way it works is I just push the OE pump button for as long as I want the pump to run. Looked into a 12 volt timer to make the pump run for a few seconds after pushing the button, but it was kinda pricey.

**hatzie** · 07-28-2018, 11:16 PM

Those Wyes are in the A2, A3, A4, A5, and A6 Jettas, Golfs, and Rabbits. The B5, B6, & B7 chassis and the Faux Beetle. The Audi models based on the VW A chassis had em as well. Just snag one used.

07-05-2018, 03:13 PM	#1
st1 Registered User Join Date: Oct 2005 Location: Jacksonville, NC Posts: 224	Wiper motor replacement Greetings to one and all. Hope the holiday has been good to everyone and all fingers are still attached. I replaced the wiper motor on my 78 GMC STEPSIDE since the current motor would not stop spraying water. The reman wiper motor from summit worked fine while I was testing it. Then it blew the fuse and another fuse and another fuse. I only switched motors, why is it blowing fuses? The reman wiper motor doesn’t run at all now. I put the original back on and now it’s not running either. It’s summer in N.C. and it will rain. I need dependable wipers, your help is appreciated. St1 Posted via Mobile Device

07-05-2018, 03:19 PM	#2
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Wiper motor replacement Fuses are blowing when you power the wipers on? Blowing out just as soon as you plug one in with the ignition on? Does the fuse blow with the wiper motor plugs disconnected? __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

07-05-2018, 03:24 PM	#4
st1 Registered User Join Date: Oct 2005 Location: Jacksonville, NC Posts: 224	Re: Wiper motor replacement I am going to leave the fuse out reset the arms to the correct parked position then install a fuse and see what happens. I have reinstalled the motor that will not stop spraying water. I routed the hoses in a loop so as to not make a mess. Posted via Mobile Device

07-21-2018, 02:27 PM	#7
st1 Registered User Join Date: Oct 2005 Location: Jacksonville, NC Posts: 224	Pics Posted via Mobile Device Attached Images

07-23-2018, 11:35 AM	#8
rgunlock Senior Member Join Date: Jul 2009 Location: Tomball, Texas Posts: 1,592	Re: Wiper motor replacement That looks really nice. Hope you get some years out of it. I recently replaced the wiper motor/pump on my 78 and it worked fine for a few weeks, then started squirting for as long as the wipers were on. Had to pull the water supply hose. I'm hoping to find a better one than O'Reilley's sells next time around. __________________ Rick 78 GMC K15 SWB, 350/NV4500/NP205/4.10s Project Hazel 71 GMC C25 350/TH400 - Project Angie 59 Chevy SWB Stepside (next in line? Not sure now ) 2001 GMC Sierra K2500

07-05-2018, 03:20 PM	#3
st1 Registered User Join Date: Oct 2005 Location: Jacksonville, NC Posts: 224	The fuses blow as I test the motor. Trying to get the arms in the correct parked position. The run I shut it off the don’t run again.

07-06-2018, 07:28 PM	#5
st1 Registered User Join Date: Oct 2005 Location: Jacksonville, NC Posts: 224	So I had to put the old one back on. The reman unit will not run. I will send it back and get another one. Putting the grill back on and calling it done. Grill reinstalled due to another project (a/c charge and trianry switch install). Thanks for the reply. Posted via Mobile Device

07-21-2018, 02:25 PM	#6
st1 Registered User Join Date: Oct 2005 Location: Jacksonville, NC Posts: 224	Got the new reman wiper motor installed with some paint. Looks okay. Posted via Mobile Device

07-28-2018, 03:29 PM	#9
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Wiper motor replacement A Dorman 603-131 tank with the AC Delco 89001120 pump are the stock 85/86 CK parts. IIRC the tank fit on my 1976 washer tank mount. Rather than the Tee you can use a Wye in the washer fluid lines to avoid the U shaped bend. VW # 1J0955873D will work if you can't find one on the HELP rack. The 98-07 GMT800 washer pump and reservoir GM 1288113 will likely fit next to the radiator on the radiator support. They hold around a gallon of fluid. You'll need to liberate the Metripack connector from your donor but these look fairly attractive to me. The other part that might be attractive is the combination Washer and rad overflow tanks off the later model GM Astro Safari vans. Take your tape measure to the Pick-N-Pull. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful. Last edited by hatzie; 07-28-2018 at 03:46 PM.

07-28-2018, 11:16 PM	#11
hatzie Moderator Join Date: Oct 2008 Location: Wentworth, NH Posts: 4,977	Re: Wiper motor replacement Those Wyes are in the A2, A3, A4, A5, and A6 Jettas, Golfs, and Rabbits. The B5, B6, & B7 chassis and the Faux Beetle. The Audi models based on the VW A chassis had em as well. Just snag one used. __________________ 1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials... 1973-1991 GM Light Truck Service, Unit/Overhaul, Wiring Manuals, Parts Books and Some 1968-1999 GM Service Training textbooks in PDF 1988-1998 GMT400 CK service manual project 1988-1993 GMT400 CK parts books. 1967-1972 GM Light, Medium, & Heavy Truck Service Manuals in PDF Please include at least the year and model in your threads. It'll be easier to answer your questions. And please let us know if and how your repairs were successful.

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