LLY: Noise/vibe in reverse

[DefiantArms]

Strange thing started happening and I'm perplexed.

In reverse and only when foot is on the brake the bake pedal has a vibration and a grinding / growling noise.

This only happens in reverse, levels are good in PS and brake reservoirs. Not sure where to start. Going to try and flush the hydro boost i think. Thank in advance -John

 

[Foxtrott4646]

Does it feel like your ABS is kicking in?

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[OregonDMAX]

Sounds like a possible hydroboost issue, mine is doing it and that's what I'm leaning towards.

Is the vibration constant while always on the pedal or does it vibrate as you apply the pedal?

 

[DefiantArms]

It's not the ABS and it does both when I apply and when just sitting on the brake. Thanks

 

[DefiantArms]

It'll also do it when I put it in reverse without my foot on the brake.