ACDelco Gold (Professional) Body Control Modules are a high quality alternative to Original Equipment (OE) parts. Body Control Modules (BCMs) are the electronic control units that monitor and control many of the systems in the car's body. Remanufacturing body control modules is an industry standard practice that involves disassembly of existing units and replacing components that are most prone to wear with new components. Damaged and obsolete parts are replaced, and completed units are tested to ensure they perform to GM specifications. In addition, remanufacturing returns certain components back into service rather than processing as scrap or simply disposing of them. ACDelco Gold (Professional) parts are manufactured to meet your expectations for fit, form, and function, making them a smart choice for General Motors vehicles, as well as most makes and models, including special applications. These high-quality parts are backed by General Motors. Some ACDelco Gold parts may have formerly appeared as ACDelco Professional.