Chevrolet Traverse Check Engine Light with Starting Issue and Possible Catalytic Converter and Canister Valve Problems on Chevrolet Traverse

Some Chevrolet Traverse owners report experiencing issues related to the Check Engine light and starting problems, which may stem from catalytic converter and canister valve malfunctions. Specifically, a clogged catalytic converter can lead to limited performance, irregular engine running, unusual exhaust odors, and poor fuel economy, often indicated by OBD Code P0420. Additionally, a faulty catalytic converter can decrease exhaust flow, triggering the Check Engine light. Furthermore, problems with the canister valve can disrupt the fuel system, contributing to starting issues and activating the Check Engine light. Some owners also find that a loose or faulty gas cap can cause similar symptoms. It is crucial for owners to address these potential issues promptly to avoid further damage and ensure optimal vehicle performance, and seeking assistance from a qualified mechanic or dealership for a diagnostic assessment is recommended.