I have a 2006 G6 GTP and the transmission just started messing up. The car has 87,000 miles on it and this should not be happening. First off, when you put it into drive it is just like putting it into neutral. It doesn't kick into gear or anything unless I put it into the manual shift position. In first gear it seems like it is slipping really bad, but sometimes it with jutter real bad. When it is shifted to 2nd it is fine most of the time, with an occasional slip. Then third and fourth gear is fine! I took it to a Tranny shop and was told it was the I internal sprag. Has anyone ever had this problem? Or heard of an internal sprag? Please help me!