Help with bad windshield washer hoses inside firewall - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Rich Gio · 10-20-2015, 08:43 AM

I just inherited a "barn find" '88 Chevy C3500 with 29K original miles. It's immaculate but has a few issues from sitting so long.

The washer pump was bad, so I put in a new one. When I hit the switch I get fluid running out from under the body. I'm assuming a line is dry rotted or mouse eaten inside the firewall. How can I access these lines. Thru the cowl? How do I get it off? I don't see any screws.

95 S_Trucker · 10-20-2015, 09:44 AM

You will go through the wiper cowl. Its fairly easy

Remove the wiper arms.

Remove the 2 outer cowl pieces(2 screws in each piece)

Remove the wiper cowl screws(I cant remember how many screws there are)

Remove the wiper cowl. You will have to disconnect the washer hose, the nozzles are attached to the wiper cowl.

You will now have access to all the hose. Its a good idea to lube the wiper linkage if your wipers squeak.

54 jimmy · 10-20-2015, 11:14 AM

second 95 s trucker

Rich Gio · 10-20-2015, 02:09 PM

Thanks! I'll try that tonight.

Rich Gio · 10-21-2015, 11:29 AM

Ok, so I am having issues getting the wiper arms off, but I was able to take out the cowl screws and get my paw down in there. I found a hose popped of at the "Y" fitting. I put the hose back on and tested. no flow. it seems the nozzles are plugged solid. Who sells replacement nozzles? All I'm finding are universal kits.

95 S_Trucker · 10-21-2015, 11:55 AM

The dealer sells them, around $20 each

GM part # 22072439

54 jimmy · 10-22-2015, 02:10 PM

if you can get them out. take a blow gun and blow them out backwards. probably full of dirt from being disconnected for so long.

Rich Gio · 11-04-2015, 12:05 PM

Quote:

Originally Posted by 54 jimmy

if you can get them out. take a blow gun and blow them out backwards. probably full of dirt from being disconnected for so long.

I found new ones on Ebay 22$ a pair. Tried blowing / cleaning the old ones with no luck!

Cape Codder · 11-07-2015, 07:20 PM

A wire pulled from a wire brush makes a great tool to clean wiper nozzles

Rich Gio · 11-09-2015, 12:05 PM

I just replaced them. What a PITA that was!

Chris95GT · 11-13-2015, 12:37 PM

Now that it's fixed, where's the pictures of this low mileage barn find?!? I wanna see!

Rich Gio · 11-13-2015, 12:52 PM

Here she is...

10-20-2015, 08:43 AM	#1
Rich Gio Registered User Join Date: Oct 2015 Location: Hackettstown NJ Posts: 14	Help with bad windshield washer hoses inside firewall I just inherited a "barn find" '88 Chevy C3500 with 29K original miles. It's immaculate but has a few issues from sitting so long. The washer pump was bad, so I put in a new one. When I hit the switch I get fluid running out from under the body. I'm assuming a line is dry rotted or mouse eaten inside the firewall. How can I access these lines. Thru the cowl? How do I get it off? I don't see any screws.

10-20-2015, 09:44 AM	#2
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,178	Re: Help with bad windshield washer hoses inside firewall You will go through the wiper cowl. Its fairly easy Remove the wiper arms. Remove the 2 outer cowl pieces(2 screws in each piece) Remove the wiper cowl screws(I cant remember how many screws there are) Remove the wiper cowl. You will have to disconnect the washer hose, the nozzles are attached to the wiper cowl. You will now have access to all the hose. Its a good idea to lube the wiper linkage if your wipers squeak.

10-20-2015, 11:14 AM	#3
54 jimmy Registered User Join Date: Oct 2007 Location: pittston,PA Posts: 1,183	Re: Help with bad windshield washer hoses inside firewall second 95 s trucker __________________ There is nothing you can't fix with a BFH or a FIRE WRENCH. 1997 chevy k1500 ext cab z71 (daily driver) sold 1996 chevy k1500 reg cab 4x4(daily driver)totaled 2008jeep patriot (wife's daily driver 2008 chevy 1500 ext cab 4x4 sold 2011 chevy 1500 crew cab ltz (daily driver) 1996 chevy 1500 reg cab 4x4 project sold 2006 pontiac grand prix gxp (daily work commuter)

10-20-2015, 02:09 PM	#4
Rich Gio Registered User Join Date: Oct 2015 Location: Hackettstown NJ Posts: 14	Re: Help with bad windshield washer hoses inside firewall Thanks! I'll try that tonight.

10-21-2015, 11:29 AM	#5
Rich Gio Registered User Join Date: Oct 2015 Location: Hackettstown NJ Posts: 14	Re: Help with bad windshield washer hoses inside firewall Ok, so I am having issues getting the wiper arms off, but I was able to take out the cowl screws and get my paw down in there. I found a hose popped of at the "Y" fitting. I put the hose back on and tested. no flow. it seems the nozzles are plugged solid. Who sells replacement nozzles? All I'm finding are universal kits.

10-21-2015, 11:55 AM	#6
95 S_Trucker Registered User Join Date: Oct 2009 Location: . Posts: 2,178	Re: Help with bad windshield washer hoses inside firewall The dealer sells them, around $20 each GM part # 22072439

10-22-2015, 02:10 PM	#7
54 jimmy Registered User Join Date: Oct 2007 Location: pittston,PA Posts: 1,183	Re: Help with bad windshield washer hoses inside firewall if you can get them out. take a blow gun and blow them out backwards. probably full of dirt from being disconnected for so long. __________________ There is nothing you can't fix with a BFH or a FIRE WRENCH. 1997 chevy k1500 ext cab z71 (daily driver) sold 1996 chevy k1500 reg cab 4x4(daily driver)totaled 2008jeep patriot (wife's daily driver 2008 chevy 1500 ext cab 4x4 sold 2011 chevy 1500 crew cab ltz (daily driver) 1996 chevy 1500 reg cab 4x4 project sold 2006 pontiac grand prix gxp (daily work commuter)

11-07-2015, 07:20 PM	#9
Cape Codder Registered User Join Date: May 2013 Location: Centerville,Ma. Posts: 1,223	Re: Help with bad windshield washer hoses inside firewall A wire pulled from a wire brush makes a great tool to clean wiper nozzles

11-09-2015, 12:05 PM	#10
Rich Gio Registered User Join Date: Oct 2015 Location: Hackettstown NJ Posts: 14	Re: Help with bad windshield washer hoses inside firewall I just replaced them. What a PITA that was!

11-13-2015, 12:37 PM	#11
Chris95GT Registered User Join Date: Feb 2014 Location: Texas Posts: 58	Re: Help with bad windshield washer hoses inside firewall Now that it's fixed, where's the pictures of this low mileage barn find?!? I wanna see! __________________ 1991 C1500 ECSB - 5.3 LS 4L80E 14bsf - Gone but not forgotten 1999 C2500 GMT-400 Crew Cab Short Bed - 6.0 LQ4 - 4L85E 2003 Denali XL - Wifeys Ride 2008 K2500HD Duramax Sierra Crew Cab Short Bed - Daily

11-13-2015, 12:52 PM	#12
Rich Gio Registered User Join Date: Oct 2015 Location: Hackettstown NJ Posts: 14	Re: Help with bad windshield washer hoses inside firewall Here she is... Attached Images

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