The Remote Keyless Entry Smart Fob Replacement for GMC Chevrolet 5b (HUFGM2718) is a black unit by Extra-Partss that provides engine immobilization features. This product is designed to replace a keyless entry system in compatible vehicles, offering convenience and security. With its manufacturer part number HUFGM2718, this smart fob allows for easy access to your vehicle while providing added protection against theft. It does not have 2-way paging capabilities but offers reliable performance for GMC Chevrolet 5b owners looking to upgrade or replace their existing remote entry system.