Thread: 2005 Grand Prix chugging

Can you point me to some of these threads? I'd like to read too.

Once in this condition, I can stop at a stoplight, and bring up RPM's against the brake. It will chug and miss, but there is no way it should be thinking about shifting. Restart car, bring up the RPM's against the brake again, and the problem is gone!

No codes for me.

Hey Gorecki,

Just saw you were having the same issue that I have been having with the 05 Grand Prix. I recieved a fix from another memeber that I wanted to pass along to ya:
Old thread, but thought it worthy of an update.

From surferstick:

I had the stock PCM reflashed to the updated code mentioned in the TSB. It's now been months, and not a single problem since, so this fixed it for sure. Even better, the car now feels as strong as my old 99 did. I always felt I lost some power when I traded my 99 GT for this 05 GT, and now I've got my missing power back too.

Happy New Year folks.


I haven't gotten mine flashed yet, but will check into it.

Just wanted to pass this along to ya.

Later....... Steve!