2012 grand caravan once the engine gets warm the transmision dont work proper.

What is your question?

Bought van used 3rd party. They told us it needed a vacuum pump. They also said something about putting ice pack on this part to cool it down to get the van home. Also told us that auto zone code said something about emissions. When the van gets warm you start to hear like this whining sound and then the transmission don't want to go into gear properly.

What makes this problem better or worse?

When engin warms up the transmission don't want to o into gear without hi rooms.

How long has your 2012 Dodge Grand Caravan had this problem?

Few weeks. Just bought van with this problem.