Not sure what's going on. When you step on the brake the pedal itself shakes and makes a weird grinding noise... 3 mechanics couldn't figure it out, just said it's common in that vehicle. Any thoughts you have would be greatly appreciated!!

  • Have all the pads and discs been inspected both inner and outer sides? Sounds like one of the pads may be down to metal. – Solar Mike Jul 5 '19 at 5:08

Sounds like false ABS activation. Pretty common on these vehicles. See this post on false ABS on GM vehicles.

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