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Keyless Entry Systems For Your Truck In the 1980s, car burglaries using hot-wiring became more frequent. To combat this, General Motors introduced transponder keys, also known as "chip keys". These new car keys contain an electronic chip in the head that transmits a unique code to your vehicle. If the code matches, your car's engine, it will begin. Transponder Keys A transponder key is equipped with the microchip that transmits an electronic signal when the key is