my truck make banging noise when you have to stop fast. on 2010 GMC Sierra 1500 Hybrid

my dealer told that gm had a bulletin on this but they could not fin today. the bang does not happen all the time. but can feel some under normal braking

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1 answer
Since this is a warranty issue let the dealership take care of it.
No one can hear the noise through your post anyway to give you a better suggestion.

Zee