Unfortunately I had problems with my Sync device. I have a 2016 GMC SIERRA, and every now and again I would get a sort of bump in my engine. I would be driving and periodically my engine would just jump like it was misfiring. Long story short, when I took my truck in for maintenance and informed the mechanic of the problem. He immediately told me to remove the SYNC UP device because it could be interfering with the communication system. I took it out and haven’t had any problems. And I actually liked having the SYNC UP device on my truck.
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