Originally Posted by SpringCitySSEi
Got it fixed!!! Bottle of Trans X an no problem since. I wanted to test it out for a while before I repolsted. I think maybe the TC is going in and out of lock up. Thanks alot!!!!
I figured I should back up a little bit and explain what all has happened since the last time I posted. After the testing of plugs, wires, coils, injectors, vacuum lines, TCC switch, brake switch, and so on....I was running low on options. I consulted several different transmission shops, my old man (who has had 4 L67 powered cars in the past), and...other sites. I came to the conclusion (along with all the suggestions) that what I had were symtoms of "converter shudder". I was advised to try some Trans X and I figured I would give it a try. After adding, I ran the car at idle in park for about 15 minutes and then took it out for several overpasses and inclines at highways speeds. I am happy to report that there was ABSOLUTELY no shudder or bucking whatsoever after the Trans X.
I am not saying this will help averyone with the same problem, but it did help me out.