Buick Repair Questions? Ask a Mechanic for Answers ASAP
Hi my name is ***** ***** I will be happy to assist with this today.In some cases I may need more info to assist better.I apologize for any delay.
This message coming on indicates a fault has been detected with the power train or anti lock brake computer with the awd system.What has to be done from here is to have the fault codes read out of all computers using a scan tool that will plug in and can communicate with all computers to see what codes are set.Once this is done any codes set then need diagnosed to then locate and repair this issue here.I have seen a failing wheel speed sensor cause this fault as well as a faulty rear differential actuator cause this issue needing replaced.The codes do need read out.A local shop or dealer can read out and diagnose the codes for a fee.A local parts store in some cases can read out the codes at no charge to you but usually cannot diagnose the fault but can give you an idea of what is at fault.
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The code reader you have may not be compatible with this model here and also a code reader alone wont be able to check codes in all computers in your vehicle.You would need higher end scan tool to be able to communicate with all computers to find out what code is set to help locate the fault here.This type of tool can be around $200 or more in some cases over $1000.
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