One problem related to anti-theft controller has been reported for the 1996 Buick Skylark. The most recently reported issues are listed below.
While on vacation we took a trip. On the way home at night all electricity devices started to die. I got off the highway the vehicle died and wouldn't start. I had it towed home and it hasn't started since. I turn the key and get nothing. When I turn the key on, the passlock system light is lit and never goes out. The battery is fully charged and I can start the car if I jump the starter but not from the key. All other electrical devices work fine.