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Discussion Starter · #1 ·
Has anyone heard a slight buzzing sound when accelerating at higher RPMs (5500ish). I have owned two Cruzes, a 2011 LS Auto, and now a 2014 1LT Auto and I just heard this for the first time a few days ago and again yesterday. The first time it happened, I was on the highway with my cruise control set to 72mph. I had some traffic ahead of me so I had to brake quickly which dropped my speed down to the high 50s. I then passed the car and resume my cruise control, which probably wasn't the best idea as I was on an incline. The car rev'd up pretty high but didn't red line and I heard the buzzing sound which seemed to be of electronic origin but I could be wrong. I quickly disengaged the cruise and the transmission shifted and the sound went away.

The second time this happened I wasn't using cruise control but I did accelerate to pass someone on an incline and again the car rev'd to the 5000-5500 rpm range. The buzzing sound came back and lasted until the RPMs dropped. Both times this happened I was in Drive and not in manual mode.

Has anyone else had this happen? I'm assuming it's a normal function of the car but I wanted to make sure. Should I mention it to the dealer the next time I am in for maintenance?

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