Transmission problems again. Shifter moves freely and car won't change out of gear. 1999 coupe with automatic transmission. I put the car up on stands and the linkage is still attached to the transmission. I have taken the console out of the car and have removed the shifter boot. Are there any diagrams out there that I can look at to see what might be causing the problem? I did find one part under the console that looks like a black plastic .22 caliber shell with a semi-circle head on top.