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Keyless Entry Systems For Your Truck Back in the 80's car theft using hot-wiring technology was becoming more and more common. To combat this, General Motors introduced transponder keys or "chip keys". The new car keys include an electronic chip in the head that transmits a unique number to your vehicle. If the code matches your car's engine, it will start. Transponder Keys Transponder keys have an electronic chip that sends an electronic signal to the car's onboard comput