Transmission problem?? 09 GT

[glhboy]

I bought an 09 GT automatic with 45,000 miles on it back in January and have recently noticed within the last month the transmission has been acting odd lately. What is most noticeable is when I come to a stop, the transmission feels like it downshifts after I stop, like a jerking motion for the whole car. It has been doing this a lot lately, but not all of the time. I also notice sometimes when I kick down the gas pedal to pass a car, that once in awhile it won't downshift into passing gear. Not sure if it's related or not. Unfortunately I am past the powertrain warranty at this point and wanted to see if this has happened to others with the newer GT?

[trb]

Mine is a bit slow on the downshifts (of course I prefer a manual trans!) and is a bit jerky, but it has not been too bad. It has gotten a bit more noticeable the past few months, so I might be taking it in before my 5 yrs is up in August. I will be changing the fluid again (drain & refill with ~ 4 quarts) soon, so maybe that will help. How is your fluid? Has it been changed? The prior owner could have abused it so changing the fluid might be a good first step.

One thing I have noticed is used transmissions for these cars are not too expensive. I've found several local to me for around $600 with under 50K miles, so if mine does end up going out after the warranty, I will be changing it myself.

Good luck on it!

[vibenvy]

Sounds like you may want to contact your local GM dealer and have them do the computer re-flash for the "harsh downshift" issue. I had this done on both our 2009 GTs a few years ago and it really made a difference.

[09vGT]

Whoa! I had no idea this existed! Thanks Carrie! I'm definitely going to have this done next time on my '09 because of the harsh downshift.

Are these done free of charge when you're out of warranty?

[vibenvy]

Whoa! I had no idea this existed! Thanks Carrie! I'm definitely going to have this done next time on my '09 because of the harsh downshift.

Are these done free of charge when you're out of warranty?

You're very welcome Ethan! Yes, it won't cost you anything. It's a TSB (Technical Service Bulletin) which is similar to a recall.