i just put in my b&m shift improver in my c6 and filled the tranny up with 11 quarts, its slips bad in reverse and is stuck in first gear in drive, all the linkages are hooked up right and i followed the directions, b&m and i are stumped, anybody else have any ideas? has anybody ever had their endplate bolts work loose? thats what i'm thinking happened....not to excited to do it all over again....but if it was fun it wouldn't be a project right

 

Did you clean out the valve body? It sounds like a clogged valve body but I could definatley be wrong.

 

Please tell me what happened when you know. I have the kit too and havn't installed it yet.