It was most times applying the brake.Thats the first I’ve read of the warped rotor symptom which worries me. Was this only felt while coming to a stop and not necessarily applying brakes at highway speeds? While I come to a stop my rig will lurch forward and back kind of mildly, but enough to notice.
Edit: for clarity, the pulsing went away with the master cylinder replacement. So what I thought might be warped rotors was resolved with this fix.
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