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Keyless Entry Systems For Your Truck Back in the 80's car theft made use of hot-wiring technology was becoming increasingly common. To stop this, General Motors introduced transponder keys, also known as "chip keys". These new type of car keys have an electronic chip in the head of the key that transmits the car with a specific code. If the code matches, your car's engine will start. Transponder Keys A transponder key has an embedded microchip that sends an electronic signal when the key is put int