22878310 GM Windshield washer tank

What is this part?

The GM windshield washer reservoir 22878310 is a genuine OEM washer system component designed to store washer fluid used for cleaning the windshield. The reservoir supplies fluid to the washer pump and nozzles to ensure clear visibility.

What does it do?

This OEM washer reservoir holds and feeds washer fluid to the system when activated, allowing effective removal of dirt, dust, insects, and road grime from the glass. A genuine GM washer tank is engineered to factory specifications, ensuring proper capacity, secure hose connections, and reliable operation in various temperatures. Correct reservoir function supports safe driving and good visibility in all conditions.

When to replace

The GM windshield washer reservoir 22878310 should be replaced if cracks, leaks, or damage are present, or if the washer pump does not receive fluid properly. Low fluid warnings that persist, visible leaks, or contamination inside the tank are common signs of failure. Replacing the tank with an OEM washer reservoir helps restore proper washer system performance.

Compatibility

The genuine GM windshield washer reservoir 22878310 is compatible with selected GM vehicles. This OEM washer system component is manufactured to factory specifications, ensuring correct fitment, mounting points, and hose routing. Compatibility may vary depending on body style and model year. Please verify the part number 22878310 before purchase.

Installation: DIY or service?

Installation of this genuine OEM GM windshield washer reservoir 22878310 may be suitable for DIY on some vehicles. Professional installation is recommended if wheel-arch liners or body panels must be removed.