twx

Hey all, new to the forum here, but have lurked since I got my new 2021 Silverado RST 6.2L in June. I've noticed for the past few weeks, occasionally the brakes will make this grinding/vibrating sound. It feels like it's almost coming from underneath the rear passenger seat. Some days it'll do it, some days it won't. I've had the pads looked at and nothing is stuck on them. The noise is not a squeak or squeal. It's a deep vibration/grumbling sound when the brakes are applied. I thought GM had this issue fixed, as I read a similar issue was happening to older models. Anyone else have this issue and/or found the fix? I'm at the point of calling the dealer, but just wanted to check in here for any tips/tricks prior to calling them. Thanks!