Brake issue

[2015 High Miler]

As my name indicate, I have a 15 Sierra with 200,000+ miles. Ive replaced the pads and had rotors turned 30,000 miles ago.  Lately at slow speeds, like a drive through or super slow traffic, I have noticed the brakes grabbing. I believe I have narrowed it down to the fronts but not 100% sure. . At highway or reg speeds, I dont notice it but at slow speeds it’s very “grabby” .  Ive had the brakes recall service performed.as well. 

Anyone experienced this before and have a diagnosis?

 

thanks 

[Eddie 70]

Sounds like warped rotors to me.

[VdellaV]

I would check the floating calipers rails or whatever theyre called. Undo the rubber boots and check that they move freely and without much resistance