Windshield Washer Fluid leak

[89Suburban]

Definitely use some mini zip ties to cinch those hoses down over the fitting barbs guys/gals. This crazy this is an issue on a 2 year old vehicle!

 

[BigJohn76]

Hi
This is happening to my 2021 model. I have traced the lines and tested for fluid flow to the connection above the battery. It is good. My rear is not spraying at all. I checked the connections under the right-side rear and under the rear headliner and they are connected. I am going to separate the hose above the headliner and see if fluid is reaching this point. If not, it has to be the nozzle or where the hose is attached to the nozzle or I am missing where a hose connection is. Feel free to chime in if you guys know something I don't!! Now I just have to figure out how to access the nozzle area.

See my post. Behind right rear side trim.

 

[BigJohn76]

There's a connection inside the cabin just as the hose comes inside. You'll need to remove the rear floor storage console, D-Pillar trim and rear sidewall trim to see it. It's this connection point circled in the picture. If that is leaking, then the area under the floor storage is probably filling up with washer fluid and hence you can't find the leak.

View attachment 390428

Found same thing on my 22 Yukon xl Denali. I had removed both front tires and inner fender liners looking for the leak. Now to get my carpet dried out!

 

[Jackey]

Hello new to the forum, late to the party!
We have a 2021 Yukon, took it to the dealer because of the same washer fluid issue y’all have. They filled it, nothing happened.
But, they had to drive it for another issue I’m having with the drive train. Came back, tank was empty. They told us they’d have to take the dash apart. Huh?
We couldn’t leave it all day, so brought it home.
Guess what the floor in between 2nd & 3rd row is wet. Thanks to this thread, my husband has a starting point to fix it ourselves( hopefully).
She is going back on 9/23 for the drive train issue to be fixed.

 

[Tahoe14]

You may want to look for a different Dealer.

 

[StephenPT]

Hello new to the forum, late to the party!
We have a 2021 Yukon, took it to the dealer because of the same washer fluid issue y’all have. They filled it, nothing happened.
But, they had to drive it for another issue I’m having with the drive train. Came back, tank was empty. They told us they’d have to take the dash apart. Huh?
We couldn’t leave it all day, so brought it home.
Guess what the floor in between 2nd & 3rd row is wet. Thanks to this thread, my husband has a starting point to fix it ourselves( hopefully).
She is going back on 9/23 for the drive train issue to be fixed.

Have your husband review this thread - https://www.tahoeyukonforum.com/thr...-rear-washer-fluid-not-spraying-fixed.147800/

I'll also add that when you find the hose that is disconnected, put a zip-tie around it at the connection point. Just a little extra clamp force at the connection will ensure it never happens again.

 

[KMeloney]

There's a connection inside the cabin just as the hose comes inside. You'll need to remove the rear floor storage console, D-Pillar trim and rear sidewall trim to see it. It's this connection point circled in the picture. If that is leaking, then the area under the floor storage is probably filling up with washer fluid and hence you can't find the leak.

View attachment 390428

So I've got a leak somewhere in my '23 Denali. Same routine -- no fluid from the rear, then no fluid from the front, and a freshly-filled reservoir emptied during/after (2) 1-hour drives (but within 6 hours of refilling the reservoir).

Now, I DON'T feel dampness at the rear seats' carpet. Does that mean that I don't have a separation of tubing inside of the truck/at the rear headliner?

Also, what's the above pic showing, exactly? Are those two lines coming out of that black grommet in the CEILING, or FLOOR, or... Where?

Thank you!

 

[StephenPT]

So I've got a leak somewhere in my '23 Denali. Same routine -- no fluid from the rear, then no fluid from the front, and a freshly-filled reservoir emptied during/after (2) 1-hour drives (but within 6 hours of refilling the reservoir).

Now, I DON'T feel dampness at the rear seats' carpet. Does that mean that I don't have a separation of tubing inside of the truck/at the rear headliner?

Also, what's the above pic showing, exactly? Are those two lines coming out of that black grommet in the CEILING, or FLOOR, or... Where?

Thank you!

The picture is the lower RH corner - removing the rear floor console and then the side panel trim will show that area in the picture.

You won't feel dampness in the carpet if it's leaking at that point. Your floor area below your floor console will fill up with washer fluid though, but there's a ledge between that area and the carpet in the 3rd row so it won't leak into there.

Take out the floor console - if yours is a standard length, there's two large plastic nuts to remove and then the console comes out (4 if it's an XL length). Then you'll see the underside and if any washer fluid is leaking into that area. To get access to the hose as shown in my picture you just need to remove the plastic trim around the 3rd row speaker, the tie-down for the cargo net + anchor and then you can pull the sidewall trim away from the cab and get to that hose.

 

[jfernand72]

Thanks for great detailed diagnosis and repair @merc

If anyone wants to save $318 or a trip to the dealer. Try what @Samuel Ross said. Mine was also disconnected there. When I reconnected it, I experienced the same thing that @KGC1978 did. I pulled off the small panel at the top & rear, next to the rear hatch. Then, pulled back the top liner and found another tube connection completely separated. Everything seems to work and the reservoir holds fluid now.

 

[jfernand72]

There's a connection inside the cabin just as the hose comes inside. You'll need to remove the rear floor storage console, D-Pillar trim and rear sidewall trim to see it. It's this connection point circled in the picture. If that is leaking, then the area under the floor storage is probably filling up with washer fluid and hence you can't find the leak.

View attachment 390428

Great advice, worked well and o got it repaired. Thank you