Dorman 603-596 Washer Fluid Reservoir - Front

Washer Fluid Reservoir for Select GM Vehicles

Dorman 603-596 is a replacement washer fluid reservoir for select Buick, Chevrolet, GMC, and Saturn applications. It is built from clear plastic and made to handle underhood heat and engine vibration while maintaining proper washer system function.

• Clear plastic reservoir construction
• 3.7 L working capacity
• Bolt-on attachment type
• Reservoir cap included
• Direct replacement for specific front-mounted applications

Fitment Details

• Fits 2010-2017 Buick Enclave, front, w/Pumps; w/Sensor; w/Hoses
• Fits 2010-2017 Chevrolet Traverse, front, w/Pumps; w/Sensor; w/Hoses
• Fits 2017 GMC Acadia Limited, front, w/Pumps; w/Sensor; w/Hoses
• Fits 2010-2016 GMC Acadia, front, w/Pumps; w/Sensor; w/Hoses
• Fits 2010 Saturn Outlook, front, w/Pumps; w/Sensor; w/Hoses

Detailed Description

This Dorman washer fluid reservoir is a direct-fit replacement for vehicles that use front-mounted washer system components. The clear plastic body helps with fluid visibility, while the 3.7 L capacity supports normal windshield washer operation. Dorman 603-596 is engineered for specific Buick Enclave, Chevrolet Traverse, GMC Acadia, GMC Acadia Limited, and Saturn Outlook applications, including vehicles equipped with pumps, a sensor, and hoses. This part cross-references GM OE 23139981 for the same application.

Common Repair Symptoms

• Cracked or leaking washer reservoir
• Low washer fluid storage from damaged tank walls
• Washer system warning caused by reservoir damage or sensor-related fitment issues
• Poor windshield washer performance after impact or heat-related wear
• Broken reservoir mounting points from vibration or age

Installation Notes

Verify the vehicle’s front washer system layout before installation. This reservoir uses a bolt-on attachment style and is specified for applications with pumps, a sensor, and hoses. Mounting hardware, washer pump, mounting bracket, and hoses are not included unless already present on the vehicle. Confirm hose port diameter and reservoir orientation against the original unit before installation.

Quality Assurance

Dorman tests this replacement reservoir for fit and performance on the listed vehicle applications. It is manufactured to withstand underhood heat and engine vibration for dependable service in the washer system.