Making a growling noise during start up?

Hi,

Have you checked the transmission fluid level and condition? If not, start with that. Also, is it possible for you to record the sound and upload it for me to hear? That may be helpful.

What you are describing sounds like the fluid may be low. As it warms up, ATF expands, and the level increases, so that could be why it is working properly after driving.

Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-and-add-transmission-fluid

Let me know what you find. Also, let me know if the check engine light is staying on while the engine is running.

Take care,

Joe