Buick Repair Questions? Ask a Mechanic for Answers ASAP
My name is ***** ***** I am a professional here at Just Answer. I noticed that your question had not received a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.
When a BCM is replaced on this model it has to be replaced with a new one as a used one is already programmed and locked to a different model.Also most BCM's need programmed by a dealer to operate properly in your model.If the used BCM is installed it may be causing the programming and communication faults in your model that can cause issues similar to this here.
Check for any damaged wiring needing repaired or replaced in the dash and leading to the BCM and PCM.If any issues are found they will need repaired to correct this fault here.If this is checked and all o.k. and you know the BCM is o.k. let me know.
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