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Buick Enclave Bluethooth
Happens a lot to me and just yesterday 11 times in 2 hours.
No relationship to my synced phones, will happen even if I do not have my phones in the car. GM says they have to hear the false (random) ring. They will not accept videotape evidence and cannot tell me how they can fix the problem. They deny it's even a problem. I've only got 3500 miles on this vehicle. Seems this technology is a little flawed for thier 2009's.