2006 chevrolet uplander 3.5 transmission drops out of gear

What is your question?

The car shits smooth and normal most times. Acts like it is low on fluid, it is not. On hard corners or bumps it drops out of gear like it is in neutral. Always between 1st and 2nd. The engine works fine and no warning lights are on. Just drops out of the gear is all. Other than that it works fine. It gets worse as it gets warmed up. Also it takes about 20 seconds to pump up when first started for the day. Thank you Mark

What makes this problem better or worse?

After warming up

How long has your 2006 Chevrolet Uplander had this problem?

2 months