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I have a 2012 acadia. When I try to use the rear washer fluid it sounds like fluid is in the drivers a pillar. It then starts leaking out from under the dash. Anyone have an idea of an easy ish fix?
 

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Sound like you sprung a leak in the line running to the rear.

I'm not sure how that line is routed. Hopefully you can find a schematic. Probably runs under the headliner.

Most likely an easy fix................once you find the leak.
 

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I'm not sure how that line is routed. Hopefully you can find a schematic. Probably runs under the headliner.
The service manual may have a diagram of the hose routing. There's a link to download the service manual elsewhere in the forum. FWIW, I believe the hose runs from the reservoir, up the A pillar, along the gutter seam between the roof and body, across the rear of the roof to the liftgate, and terminates at the rear washer nozzle.
When I try to use the rear washer fluid it sounds like fluid is in the drivers a pillar. ... Anyone have an idea of an easy ish fix?
If you can find a break in the hose inside the A pillar, you may be able to fix it with a hose splice. You'll have to know the hose ID (inside diameter) in order to pick the correct splice.
 
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