Some tranny trouble with my G8 GT

Under warranty, I've now had one major issue and one minor issue handled. The minor issue was a scratch on the underside of the front bump cover that was likely put there during one of its test drives...so that doesn't really count.

The major issue is with the transmission. Over time, my G8 GT developed a clunking when I would shift from reverse directly into drive. It was inconsistent. It was more pronounced when the car was cold started. Every once in awhile, the car would actually jerk forward so much that I had to get into the habit of pressing very tightly onto my brakes before moving into drive.

When I first reported the issue to my dealership at 6000 miles, the service dept said that there was no bulletin on the issue even though I did get the service manager to reproduce the issue. I didn't make a stink at that time, though I prolly should've. The problem got worse from there. It got so bad, I couldn't let anyone else drive it.

So, at about 8000 miles I had enough. I took it in. The dealership was claiming that they could not reproduce the problem to the degree I stated. In addition, they claimed that a bulletin from GM (just issued a month before) said that clunking transmission was "normal operation". To me, this was not just operation, but safety (since the behavior of the car was actually dangerous). I insisted that the issue be addressed. I had to include the involvement of the general GM customer service department. After I insisted they keep the car and keep trying, the dealership was finally were able to reproduce the issue and finally realized that something needed to be done.

A lot of time was supposedly wasted because the GM technical service didn't have the staff assigned to handle any issues in the NorCal region (something to do with the restructuring that was going on at the time). Finally, an engineer was assigned to the case and determined the issue was mechanical. The dealership followed Detroit's instructions, replacing a bunch of parts deep inside the tranny.

All said, the dealership had my car for two weeks. The issue was much less obvious afterward. There is still some tendency for the tranny to engage a bit aggressively when going from reverse to drive, but at this point, that seems to fit the "normal operation" mentioned in the GM bulletin. At least I don't have to be concerned with it jerking forward.

Now that the car is over its 10K mark, everything seems to have broken in.