06 Cadillac CTS: The anti-theft and T/C lights kept coming on. Now none of the dash or interior lights come, it won't start and I cannot remove the key. Took battery out and it tested good. Help!!
The car is antitheft mode and will need to be reset by a lock smith or a dealer/mechanic with the proper diagnostic and computer.
Thank you, T_S_T! I will try that.
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