GM Buick/Oldsmobile/Pontiac/Full-Size 1975-1990 Repair Guide

Windshield Washer Reservoir


The windshield washer pump fluid reservoir is a plastic container usually found on the left or right side of the engine compartment.


The reservoir should be filled to the top of the container using a wiper fluid solution which can be found in most automotive stores. Do not further dilute the mixture (unless manufacturers instructions tell you to do so) as this will affect it's ability to keep from freezing in low temperatures. Never place other fluids in the reservoir, such as a water/antifreeze mix, as other fluids could damage the pump seals.