Buick Repair Questions? Ask a Mechanic for Answers ASAP
Hello and welcome! My name isCustomerand I can assist you with your question. Are you looking for some possible causes or would you like me to walk you through this diagnoses? Can I get the codes in the computer?
Hello and good morning! Sorry for the delay! There still should be codes in the computer related to the security system. Anyway, your ignition keys can be bad or the security module may be bad. I would start by checking the inputs to the security module first (powers and grounds) with the key in the ON position. It still should get power and ground with the key on even if the engine does not start. If all checks out good, I suspect the security module/theft module is bad and will need to be replaced.
The location of the theft module?
Here is the module location
Here is a wiring diagram of the security system.
I am glad I can help!
It has been a pleasure working with you. Please dont forget to honor your good faith deposit by rating my answer as "Excellent Service" for assisting you today.
Please let me know if you have any further questions.