[IndyDiesel]

Sounds like a transmission replacement is in order. My first reaction is do you have the correct fluid amount in the transmission? It’s almost impossible to really know.

 

[IndyDiesel]

Assuming it hasn't leaked any out - it should yes. I followed the funky Aisin AF40-6 refill procedure after I did the trans cooler lines back in March. Wait for drips to be ~1 per second, reinstall check plug (which, oddly enough, is on the bottom of the engine - inside of the larger drain plug), turn engine off. Add X amount of trans fluid. Reinstall fill plug.

Trans had been great - almost like it was new - up until a month or so ago when my wife started complaining about it, but I hadn't had the "good fortune" of experiencing the problem until yesterday.

I have had good luck with mine, makes me a bit anxious to go out of warranty and have a $5000 plus transmission replacement. You didn’t really have a warning until now. If this was a gen 2 Diesel you would be out of warranty.

 

[IndyDiesel]

Seems like it kind of just happens whenever it feels like - sometimes it'll do it a lot more, sometimes not at all. She said it doesn't do it on the freeway...but given you don't spend much time stopped, I would expect it wouldn't even have the chance to show up. It did not seem to do it the first 15-20 min or so of our drive on Saturday, then all of a sudden the car was rolling backwards instead of moving forwards, and then the big jolt. That's when my wife said "this is what I was talking about".

Maybe it would be better to get it doing it on an incline and floor it and fix the transmission for good? :shoot::shoot:

 

[IndyDiesel]

I've been running AmsOil in near everything I've owned for the last almost 20yrs. The more I hear about how picky manufacturers are with their fluids in their new cars has started to make me think twice about AmsOil lately. This thread don't help, makes me suspicious of how the fluid is treating the Aisin trans. I've got to do my first oil change on my Cruze and not even sure which brand of engine oil to go with anymore. Although, when I called the Chevy dealer, to buy the oil they use seems to be cheaper than if I were to go to the local parts store(with my discount). I'm thinking factory fluids is best anymore...I dunno.

I used AmsOil in transmission and no issues. My better guess is the stupid method of trying to put the proper amount of transmission fluid in it since it doesn’t have a dipstick. When just doing a change you just put back in what you took out, if you have a transmission line leak, it’s a guessing game in my book. I seriously doubt I keep my CTD past the warranty.