This Anti-Theft Module is a genuine GM part with part numbers 22738087, 25861815, 25992280, 25841840, and 15845229. It is compatible with 2007-14 GM Silverado Sierra Tahoe Express IGNITION IMMOBILIZER systems and is designed to provide optimal security against theft. The module is made to the highest quality standards and is guaranteed to function properly. The Anti-Theft Module is an essential component of the vehicle's security system and is responsible for detecting theft and preventing it. It is compatible with various GM models and is designed to fit seamlessly into the vehicle's interior. This item is perfect for anyone looking to replace their old or damaged Anti-Theft Module and restore their vehicle's security.