This 2015 GM Onstar Back Up Battery (part number 23117460) is a reliable and essential component for your vehicle's ECU and computer module needs. It has been designed specifically for GM vehicles and requires programming for installation. The battery is made with high-quality materials and comes without any manufacturer warranty. It is a great replacement part for your car or truck and is sure to meet your needs. Buy with confidence from eBay Motors, your trusted source for parts and accessories.