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Ivan, ASE Certified Master Technician
Category: Buick
Satisfied Customers: 4871
Experience:  ASE Master Tech w/ 20+ years in the field. Self employed for 9 years. Member of AUTOLAB radio show.
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My 1996 Buick Skylark starts but dies immediantlyand will not

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My 1996 Buick Skylark starts but dies immediantlyand will not restart until i turn the key all the way off and try again, and it repeats. The Theft System light is on.

Hello Jack, the antitheft system is active and it acts that way because the computer shuts the fuel injectors off. There may be a fault or the antitheft system may just need to be resynchronized to the key. Follow this procedure exactly concentrating on the time intervals and see if that allows things to return to normal. Let me know what happens.


Your JA Expert,




IMPORTANT: Due to component variability, the vehicle theft deterrent (VTD) system must have the learn procedure performed regardless, if the vehicle starts on the first ignition cycle after a VTD repair.

You must perform a theft relearn procedure if any of the following components have been replaced:

  • Passlock Sensor
  • Instrument Panel Cluster (IPC)
  • Powertrain control module (PCM) The above modules, with the exception for the Passlock Sensor must also be programmed with each module's own vehicle configuration.

Time required, approximately 10 minutes:

  1. Insure that the battery is fully charged.
  2. Use the scan tool in order to clear the DTCs.
  3. Turn the ignition switch from the OFF position to the CRANK position attempting to start the vehicle. The vehicle will start and then stall.
  4. Leave the ignition switch in the ON position while observing the security indicator.
  5. When the security indicator turns off, which can take up to 10 minutes, turn the ignition switch off. Wait 10 seconds.
  6. The BCM and the PCM will learn the new code on the next start attempt.
Ivan and 5 other Buick Specialists are ready to help you
Customer: replied 8 years ago.
That did the trick. Thank You very much. Jack

You are very welcome Jack, have a great night. Print that out and place it in the glove box if it ever happens again.