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The Chevy dealer just replaced the Drive Motor B Bearing to get rid of the whining noise occurring during acceleration and deceleration. However, the noise has now been replaced by a brushing sound during the same circumstances.

https://www.youtube.com/watch?v=F2ulyuyBVE8 <- What it sounded like before

https://www.youtube.com/watch?v=TH3MO8Znlho&feature=youtu.be <- What it sounds like now. Most prominently heard between 25-35 second mark in the video.

Anyone know what I have to get the dealer or Volt Adviser to help me with? I see that maybe the whole drive unit has to be replaced? What's the deal?

Thanks.
 

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Sounds like normal noise pads produce against rotors. If you want to discard the bearing, put car on Neutral while car is moving and you should still hear that sound, because it's coming from the brakes (normal). If the sound you're hearing is a different one that you suspect is from the bearing, it should stop when N is engaged.
 

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Sounds normal to me as well. Can you hear it with the windows down? The car is quiet but not really silent.

There were some issues with replacing the bearing but it sounded like what you had to begin with, not what you have now.
 

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First, why did you post in the Gen 2 forum when you have a 2013.

Second, Good you got the first problem solved because that was not normal.

Third, the new noise is not normal either. Here are two problems I had with one of my 2013s.

  1. Some 2013s have a front brake noise that is corrected by a software update. Yes believe it. I had brake noise on the front brakes and took it in and found there is a PIC on it. Software updated corrected the problem.
  2. Just this last month I had another noised coming from the front left. Turns out it was a hub bearing that needed replaced.

Yours could be either or neither of those but it is a noise that needs corrected.
 

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The Chevy dealer just replaced the Drive Motor B Bearing to get rid of the whining noise occurring during acceleration and deceleration. However, the noise has now been replaced by a brushing sound during the same circumstances.

https://www.youtube.com/watch?v=F2ulyuyBVE8 <- What it sounded like before

https://www.youtube.com/watch?v=TH3MO8Znlho&feature=youtu.be <- What it sounds like now. Most prominently heard between 25-35 second mark in the video.

Anyone know what I have to get the dealer or Volt Adviser to help me with? I see that maybe the whole drive unit has to be replaced? What's the deal?

Thanks.
I'd say your brake discs have gone a bit rusty while it was in for the repair work. Mine are making this noise now and will probably have to replace the rear discs soon... they just don't get enough use!!
 

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I'd say your brake discs have gone a bit rusty while it was in for the repair work. Mine are making this noise now and will probably have to replace the rear discs soon... they just don't get enough use!!
You can, you know, use them. Every month or two, find a quiet road, do a couple of short stops from a brisk speed. That will get the brake pads to scrub the discs a few times.
 

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You can, you know, use them. Every month or two, find a quiet road, do a couple of short stops from a brisk speed. That will get the brake pads to scrub the discs a few times.
I try doing this off the motorway exits particularly. It just isn't enough. English-damp-weather and all that, I expect.
 
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