Rear window washer

[intergalactron]

When I got my 2020 Tahoe, everything worked. Somewhere in the last 3+ years, the rear window washer quit working. Front windshield washer still works, rear wiper still works, rear washer pump runs when turned on, no washer fluid comes out. Ideas?

 

[Doubeleive]

When I got my 2020 Tahoe, everything worked. Somewhere in the last 3+ years, the rear window washer quit working. Front windshield washer still works, rear wiper still works, rear washer pump runs when turned on, no washer fluid comes out. Ideas?

try checking for a broken line/leak, find a dry spot of cement and run the rear wiper washer for a bit then get out and look under the vehicle for a wet spot, if the line is broken then it should be above the wet spot on the ground.
if you can't find anything wet at all even under the truck or in/around the rear hatch then it's possible the motor is cracked and is just sucking air, normally when they crack though they leak right at the washer tank

if the line is cracked you can patch it with some rubber hose and clamps, it's not high pressure and certainly not worth the cost the dealer would charge to replace the entire line

 

[Joseph Garcia]

^^^^^x2^^^^^

 

[intergalactron]

I've never noticed anything on the ground, but I'll check it out.

Does the washer line run on the bottom of the vehicle?

 

[intergalactron]

Finally tracked this down. A connector popped between two hoses under the hood, drivers side, above the wheel well. Super easy fix. I'll try to get a pic of the connector and post it.

 

[fastjames]

I had the same problem, and it turned out to be the same cause -- a disconnected line that was washing my engine bay instead of the rear glass!

I tried to upload some photos to show the location of the line, but I guess I'm not allowed to do that. For future reference, if you are standing in front of the engine bay it's a line on the far right side and it should be in a little C-clip. In my case, the line running back to the rear washer was completely disconnected and hanging free in the bay.