Cadillac Seville EVAP leak issue with code P0442 and gas smell, purge valve solenoid replacement needed on Cadillac Seville

Some Cadillac Seville owners report experiencing issues related to EVAP leaks indicated by the P0442 trouble code, often accompanied by a noticeable gas smell. These problems can stem from common causes such as a loose or damaged gas cap, cracked EVAP hoses, or a faulty EVAP purge valve. Some owners find that removing and reinstalling the gas cap temporarily resolves the issue, but if the problem persists, further inspections and repairs may be necessary. Even after replacing components like the gas cap and purge valve solenoid, some individuals report intermittent issues, emphasizing the importance of ensuring the gas cap is securely fastened without over-tightening. Additionally, dealers frequently utilize smoke machines to detect small leaks in the EVAP system, as these can be difficult to identify otherwise. It is also advisable to inspect the EVAP purge test port cap and fuel fill pipe connectors for potential leaks.