[Tranny info needed.]

Well tranny issue is fixed. Just had to reprogram computer, but now the idle surges... If it's not one thing it's another...

[Tranny info needed.]

I have a question that I hope when answerd is a cheep fix. I am having a issue with my 03 SS. It appears that my torque converter or maybe a solenoid is messing up. When I let off the gas it stays at about 1200 RPM's and acts like a cruise control. If I hit the breaks it still pushes. If I shift to neutral then it idles down to about 800 RPM's seams like the tranny is staying engaged to engine causing the higher idle when coasting. I had a issue like this on a Grand Am and it was a solenoid that was bad. Is there such a critter on the SS or could torque converter be shot? The only mods to tranny is the Shift kit. I wanted to get some ideas before I try and deal with the dealership because of already having been inside the tranny.