Upgrade your Pontiac Grand Prix's interior functionality with the OEM 10438813 Drivers Side Left Master Window Switch. This genuine replacement part ensures seamless integration and operation with your vehicle's electrical system, featuring a durable design tailored for the 2004-2008 models. Its sleek black color maintains the original look of your car's interior. The switch is strategically designed for the left front placement, ensuring easy access and control. It is a non-performance part numbered 10438813, complemented by other part number 10438816 for comprehensive compatibility checks. Please note that the country of manufacture is unspecified, ensuring quality and reliability for your vehicle's needs.