Starting problems on a Cadillac can be caused by a variety of reasons. A mechanic should be consulted to find the root of the problem.
Cadillac owners can sometimes receive an error message on the car's internal dash messaging system that states "security system threat." The message may then state to remove the key from the ignition and wait three minutes before restarting. However, the car may or may not start after the three-minute waiting period. This problem is often due to a security flaw in the Cadillac that is not allowing the ignition key to be read.
If the car does not start when you turn the ignition key to the "Start" position, this means the starter motor is failing to turn over the engine. The reason for this is often a dead battery. However, it could also be caused by a dead starter motor, a faulty ignition switch or a control wire with a bad connection in the starter motor.
If the Cadillac's starter cranks but the engine still will not start, there could be a variety of problems causing this -- including a bad fuel delivery system, a problem with the engine electronics (such as the sensors), a faulty distributor cap or internal engine problems.
