Shifter is sluggish
I believe I understand what is happening, but I am looking for opinions and suggestions.
I am the original owner of a 2006 GTO 6 speed manual, with just under 40,000 miles. The car is all original with the exception of a cold air intake and a diablo sport performance program. I do not race or abuse my GTO other than the occasional down shift into 3rd at 50mph to pass, or a high speed run up the on ramp to get on the interstate.
Here recently when I change gears the action between shifts feels like I am moving an oar through mud. The car shifts into gear without any grinding or attempts to jump out of gear, whether I am cruising at low rpm or shifting quickly at high torque, high rpm. If I am sitting still and just running through the gears with the engine off or idling I have no issues. I can push the shifter to the far right or left and it will spring back to the center on it's own.
I think I need to drain and replace the oem transmission fluid. I intend to do this over the next weekend to see if this solves my issue.
I would appreciate any thoughts on this subject.