One problem related to ignition switch has been reported for the 2002 Cadillac Seville. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2002 Cadillac Seville based on all problems reported for the 2002 Seville.
While driving the vehicle it would just stop, it wouldn't start while moving. I had to pull over to the side of the road or stop where I was and put the vehicle in park and then it would restart. Only to stop again, every thing went dead, lights, engine, interior gages everything. Lost power steering, power brakes, air bags, everything stopped. This was reported to the Cadillac dealership where I purchased the vehicle new. The problem went on for over a year before they found that the ignition switch (key type) was the problem and once replaced the car has functioned well since. But I found myself only driving on side streets keeping the vehicle at slow speeds and often not driving it for weeks at a time while the dealership worked on the vehicle trying to fix it. This was an intermittent problem that didn't happen all the time but as the months passed it became more frequent until it was every time I drove the car.