Sorry, forgot I don't have a vehicle section filled out on this forum. It's a 2002 Chevy Monte Carlo with 120k on the clock. Trans fluid was changed 2 years ago and I've only put 12k miles on since then. The fluid still looks brand new.

I'm aware of the non hardened fourth clutch and realize that forcing the car to act up isn't the greatest idea, but without forcing it to have the problem the best I could say was the car wasn't shifting correctly. I figured having a bit more information would be immensely helpful.