Good afternoon. I have a base model 2007 Grand Prix 231 that when i kinda-sorta want to get on it, the trans has a habit of trying to find the correct gear. And sometimes, hits said gear on the harsh side. After taking it's sweet time doing it.

I was a' wondering if anyone else has had or seen this problem, and if so, what the fix was. ECM reflash, etc. If i drive it normally, like an old man would, i have no issues.

Thank you.