2005 Pontiac GTO Owner's Manual - Page 71

Theft-Deterrent Systems Vehicle theft is big business, especially in some cities. Although your vehicle has a number of theft-deterrent features, we know that nothing we put on it can make it impossible to steal. Immobilizer Operation Your vehicle may have a passive theft-deterrent system. The system is an electronic engine immobilizer, which disables the car, when the key is removed from the ignition. The system works when you turn the key to ON. The key uses a transponder that matches an immobilizer control unit in your vehicle. The correct key will start the vehicle. Your vehicle has a special key that works with the theft-deterrent system. There is a transponder in the key head. If the key is ever damaged, you may not be able to start your vehicle. When trying to start the vehicle, if the engine does not start and the security light comes on, the key may have a damaged transponder. Turn the ignition off and try again. Immobilizer This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: 1. This device may not cause interference. 2. This device must accept any interference received, including interference that may cause undesired operation. Changes or modifications to this system by other than an authorized service facility could void authorization to use this equipment. 2-13