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Q: Greetings! How to reset 05 CTS Cadillac anti-theft system without taking to dlr. on 2005 Cadillac CTS

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
Changed battery/alternator on CTS Cadillac. Tried to start vehicle, but not start. Anti-Theft light stay on. Tried 10 mins x 3 = 30 minutes but not luck. Please help!!
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