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Keyless Entry Systems For Your Truck In the 80's, car theft using hot-wiring technology was becoming increasingly common. To combat this, General Motors introduced transponder keys, also known as "chip keys". The new car keys have an electronic chip inside the head of the key, which transmits the car with a specific code. If the code matches your car's engine, it will start. Transponder Keys A transponder key is equipped with the microchip that transmits an indication when the key is i