Immobilizer Operation (Key Access)
This vehicle has a passive theft-deterrent system.
The system does not have to be manually armed or disarmed.
The vehicle is automatically immobilized when the key is removed from the ignition.
The system is automatically disarmed when the vehicle is started with the correct key.
The key uses a transponder that matches an immobilizer control unit in the vehicle and automatically disarms the system. The vehicle may not start if the key is damaged.

The security light, located in the instrument panel cluster, comes on if there is a problem with arming or disarming the theft-deterrent system.
When trying to start the vehicle, the security light comes on briefly when the ignition is turned on.
If the engine does not start and the security light stays on, there is a problem with the system. Turn the ignition off and try again.
If the engine still does not start and the key appears to be undamaged or the light continues to stay on, try another key.
If the engine still does not start with the other key, the vehicle needs service. If the vehicle does start, the first key may be damaged.
See your dealer who can service the theft-deterrent system and have a new key made.
It is possible for the theft-deterrent system decoder to learn the transponder value of a new or replacement key. Up to 10 keys can be programmed for the vehicle.
The following procedure is for programming additional keys only.
To program a new key:
1. Verify that the new key has 1 stamped on it.
2. Insert the current key in the ignition and start the engine.
If the engine will not start, see your dealer for service.
3. After the engine has started, turn the key to LOCK/OFF, and remove the key.
4. Insert the key to be programmed and turn it to ON/RUN within five seconds of the ignition being turned to LOCK/OFF in Step 3.
5. The security light will turn off once the key has been programmed. It may not be apparent that the security light went on due to how quickly the key is programmed.
6. Repeat Steps 1 through 4 if additional keys are to be programmed.
Do not leave the key or device that disarms or deactivates the theft deterrent system in the vehicle.
See also:
Tire Designations
Tire Size
The example shows a typical passenger vehicle tire size.
Passenger (P-Metric) Tire
(A) Passenger (P-Metric) Tire: The United States version of a metric tire sizing
system. The letter ...
Fuel Range
Displays the approximate remaining
kilometers (km) or miles (mi) you
can drive without refilling the fuel
tank. This estimate is based on the
current driving conditions and
changes if the dr ...
Vehicle Overview
The 2007 Cadillac Escalade EXT makes it clear that General Motors plans to
continue its lineup of crossover pickup trucks. GM entered the segment five
years ago with the 2002 Chevrolet Avalanche, ...






