Find Cadillac Deville Canister Purge Valve Solenoid & Cadillac Deville Purge Valve Solenoid. Order Cadillac Deville Purge Valve Replacement Cost. Maintaining the vapor canister purge solenoid in your Cadillac Deville is pivotal for preventing fuel vapor leaks and ensuring optimal performance. Regularly check for signs of wear, such as difficulty starting the engine or a drop in fuel efficiency, which may indicate the need for a replacement. To extend its lifespan, ensure the solenoid is free from debris and corrosion. When selecting a new solenoid, opt for one that matches the OEM specifications for your Deville, as they come in various designs and materials that offer different benefits. High-quality construction ensures durability, and following the manufacturer’s installation guidelines will assure a correct and secure fit, safeguarding your investment and maintaining your vehicle's integrity.