Walker 590-1191 Engine Variable Valve Timing (VVT) Solenoid

OE Replacement VVT Solenoid for GM Engines

Walker 590-1191 is an engine variable valve timing solenoid built to restore camshaft control in GM applications that rely on oil-pressure-actuated timing adjustment. It regulates pressurized oil flow to the cam phaser or VVT sprocket, helping maintain proper valve timing across changing load and speed conditions.

Compatible With 2007-2014 Cadillac Escalade, 2010-2019 Chevrolet Silverado 2500 HD, and 2010-2020 GMC Savana 3500 applications, this solenoid addresses timing-related drivability concerns with an OE-style electrical and hydraulic design.

• Silver housing with black connector color
• 1 square female connector with 2 male terminals
• 3 mounting holes for factory-style installation
• OE replacement design for dynamic camshaft timing control
• Built for oil flow regulation, electrical response, and pressure control

Detailed Product Overview

The Walker 590-1191 VVT solenoid is engineered for engines that use variable valve timing to improve combustion efficiency, throttle response, and emissions performance. By controlling oil delivery to the cam phaser, it helps the engine adjust valve timing based on driving conditions. Walker 590-1191 is a direct-fit replacement for a wide range of Chevrolet, GMC, and Cadillac trucks, vans, and SUVs, including Chevrolet Express 2500, GMC Sierra 2500 HD, and Chevrolet Camaro applications.

This part cross-references Standard Ignition VVT310 for the same application.

Common Problems This Part Can Address

• Check engine lights with VVT-related fault codes such as P0010-P0014 or P0020-P0024
• Rough idle or unstable engine operation
• Hesitation during acceleration
• Reduced power from incorrect cam timing control
• Oil flow issues caused by a sticking or electrically failed solenoid

Installation Notes and Tips

Use the factory connector and mounting points for installation. Before replacement, inspect the oil condition and verify that the VVT passages are not restricted, since contamination can affect solenoid operation. Confirm the connector shape, terminal count, and mounting pattern against the original part before installation.

Quality Assurance

Walker Products manufactures this VVT solenoid to meet or exceed OE specifications for electrical response, oil flow control, and pressure regulation. The design uses heat-resistant housing materials, precision-machined internal components, and oil-sealed connectors for reliable operation in continuous engine service.