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I've read others with Eco automatics behave the same way(downshifting in manual mode on throttle input). The display saying M6 at a stop sign however seems wrong and if you can duplicate maybe your dealer could find a fix. Does your manual mode up shift automatically too? The reason I ask is other GM cars/trucks manual mode works differently than my cruze, where say if you lock M5 or M4 it still automatically shift everything, it will just not shift to gears above what you have it set to.

With my 2012 1LT RS automatic no amount of throttle input in any gear will cause a downshift in manual mode. It will only automatically downshift if your speed/RPM for that given gear drop to low and all gear changes are displayed on the DIC.
 

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The eco auto programming is indeed different from the rest.
I wish I could have it both ways, a auto/manual mode like yours where i could lock out upper overdrive gears and other times full manual mode like my RS auto. With my auto its nice to be able to get on the throttle and not cause a downshift, having this control does gain MPG(keeping the RPMs lower).

Starting from a light, it is in first but displays M5......it will only shift up as far as fifth......I have found this improves my 'light throttle' mileage a bit as well.
This is exactly how most other GM cars behave and I was shocked my cruze was so different.

I've a question for the non eco members.......Do you folks have the option of a second gear start?.......the eco does not.....it will start off in first regardless of position displayed.
I can start out in 2nd or even 3rd(I would not recommended starting in 3rd I feel this is a programming bug). Its definitely in those gears, you can feel a slight clunk and more vibration once moving to 2nd and even more again in 3rd.
 

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Thanks for responding......one of those questions I've been wanting to ask for, like, three years.

Rob
The funny part is I've also been wondering about the ECO automatic behavior as well because from other user posts over the years it sounded like the ECO automatic did not work like mine. I posted a question 3+ years ago to see if anyone could confirm the differences in the programming but all I got was cricket sounds.
 
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