Walker 590-1021 Engine Variable Valve Timing (VVT) Solenoid

Walker 590-1021 VVT Solenoid Overview

Walker Products 590-1021 is an engine variable valve timing (VVT) solenoid built for applications that use an integrated oil control valve design. It is a direct-fit engine management component for select Buick, Cadillac, Chevrolet, GMC, Pontiac, Saturn, and Saab vehicles, including Buick Enclave, Chevrolet Traverse, and Cadillac CTS applications.

Walker Products focuses on OE-style engine management parts manufactured to meet or exceed OEM standards and specifications. The 590-1021 reflects that approach with a metal housing, black connector, and blade-style terminals for a factory-style electrical connection.

Key Features

• Engine variable valve timing (VVT) solenoid for oil control valve applications
• Black connector with rectangular shape for a factory-style fit
• Metal housing for durable engine-bay use
• 1 connector, 2 terminals, blade terminal type
• Female connector with male terminals
• Walker Products part number 590-1021
• Cross-references Standard Ignition VVT190 and Gates VVS185 for the same application

Product Details

Walker Products 590-1021 is engineered for vehicles that rely on precise oil flow control to manage cam timing. In applications such as the Chevrolet Impala, GMC Terrain, Cadillac SRX, and Buick LaCrosse, a properly functioning VVT solenoid helps the engine control system regulate timing response based on operating conditions. This part number, 590-1021, is a practical replacement choice for drivers addressing VVT-related drivability concerns across a wide range of 2005-2019 GM and related platforms.

Common Issues This Part May Address

• Check engine light related to VVT or oil control valve performance
• Rough idle or inconsistent engine response
• Timing control faults caused by a sticking or failing solenoid
• Reduced fuel economy from improper cam timing control
• Engine performance concerns on Buick Enclave, Chevrolet Traverse, and Cadillac CTS applications

Installation Notes and Tips

Verify connector style, terminal count, and mounting configuration before installation. This part uses a single rectangular female connector with two male blade terminals and one mounting hole. Confirm vehicle-specific fitment for the exact year and engine configuration, especially on integrated oil control valve applications. For best results, inspect the engine oil condition and related wiring before replacing the solenoid.

Quality Assurance

Walker Products has supplied fuel system and engine management components since 1946 and supports its product development with manufacturing, engineering, and technical resources. The company is ISO 9001/IATF16949 certified and states that its parts are produced to meet or exceed OEM standards and specifications.