Explore Chevrolet Impala Auto Transmission Components. Find Chevrolet Impala Manual Transmission Components & Chevrolet Impala Gearbox Parts Catalog. Maintaining the transmission components of your Chevrolet Impala is crucial for ensuring a smooth ride and long vehicle life. Regular fluid checks and timely filter replacements can prevent common issues, while unusual noises or shifting problems often signal the need for component replacement. When selecting new transmission parts, consider the distinction between OEM and aftermarket choices; OEM parts guarantee a factory-spec fit, while aftermarket components may offer unique enhancements or a budget-friendly alternative. Always prioritize high-quality materials to avoid frequent repairs, and for those adept with a wrench, installing components with precision can save on labor costs. By following these guidelines, you can effectively extend the lifespan of your Impala's transmission system and enhance your driving experience.