https://blogfreely.net/steambe....at2/why-truck-keys-r
Types of Truck Keys Knowing the kind of key you have will make it easier to obtain a replacement. Here are the different types of keys and their characteristics. The type of key appears like a standard key but it contains an electronic chip that helps prevent car theft. The chip communicates with vehicle to allow it to start. Transponder Keys A transponder key that is normal in appearance like a regular metal key, but with an aluminum top which houses the transponder. GM's Circle Plus and PK3 keys