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Rear window washer.

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15K views 10 replies 9 participants last post by  khalil_y  
Open the tailgate and look towards the top above the glass. There is a long black rectangular cover panel. Pry that cover off to expose the hoses and fittings.
We have had more than a few cases where the check valve clogs with an unidentified white substance. Looks like fine ground white plastic.