Originally Posted by SoulStealer
I have a rough shifting 14 laredo with the v6
Thanks for your input.
Can you describe what rough shifting means to you? I think there is more than one issue going on.
Some people describe a problem where you accelerate briskly, let up on the gas and perhaps it sees it can skip a gear. And when it goes in, you get a Clunk. Some people get that clunk as it downshifts when your rolling to a stop. This sounds like a mechanical (e.g. syncing gears) issue and sometimes confused with other undesirable behaviors. And for folks with this issue taking it out of Eco mode does not help. Still could be a software issue though. I suspect later build models don't have the "Clunk" issue. Not sure if that is due to mechanical change or intermediate better firmware from the factory. And I don't think it's trim level dependent. I personally have never seen this problem on my later build limited.
The issue I'm referring to in the first post strictly the ECO Mode behavior. Where it will Lag, sometimes quite a lot as you gently accelerate from a stop. If you ask for more power, it lags further. Then you ask for more and it downshifts A LOT and suddenly your head whips back and you're on someone's butt. Some might call this "rough shifting". I don't. Because the transmission it self does this thing with grace. Taking it out of ECO mode reduces this problem 95%. When it goes into this aggressive downshift it tends to want to stay there after you let off the gas much longer than feels right. Eventually it will. Pressing the gas modestly will bring the gear back up faster than just waiting with no pedal. This really feels like a software issue. It can vary a lot because what your transmission has "adapted" I think greatly effects it. I'm suspecting might be trim level dependent (i.e. Dual Exhaust or not). Like perhaps the Larado single exhaust tuning is being using on the dual exhaust models. With such major exhaust different I can't imaging the tuning with be identical. It might be handled through "Adaptive" process. But the Larado adapts better. I do have this problem on my limited even after the recent TSB.