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Keyless Entry Systems For Your Truck In the 1980s, car thefts utilizing hot-wiring became more frequent. General Motors introduced "chip keys" or transponder keys to combat this. These new car keys contain an electronic chip inside the head that transmits a unique code to your vehicle. If the code matches, your car's engine will start. Transponder Keys Transponder keys come with an electronic chip that sends an electrical signal to the car's computer onboard when the key is placed in the ignition.
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