Why is my car dying and losing voltage?

What is your question?

I have a 2019 Chevy equinox that is losing voltage we have tested the battery the alternator and the starter and they have all passed apparently they are all good but we are still losing voltage we have no clue what's going on can somebody help me please??

What makes this problem better or worse?

When driving loses voltage when stopped voltage may come back up but not often

How long has your 2019 Chevrolet Equinox had this problem?

2 weeks