https://vimeo.com/380963666

Link above for video. This rattle started after fuel induction and fuel tank drain do to water in gas tank. They also replaced the brake check valve. The odd thing is that it only does it in reverse and increases in sound and vibration when turning the steering wheel. The vibration sounds like driver side front and the vibration can be felt in the brake pedal.

Vibration and rattle usually only occur after a cold start. I've read anything from a timing chain tensioner, alternator pully or power steering pump issue.

Thoughts?

 

I should say I was sitting still in the video and when turning the wheel it would stop and start upon turning it back. It would also do it while moving.
Coming to a stop and just before stopping you can feel a slight rattle in the brake pedal.