Auto trans shift times

[Quinton Exler]

You are not alone i have tried to tell my chevy dealership of the issues twice they didn't do a thing about it. Take it back, trade it in get rid of it and get the manual version if you still want the car.

The Trifecta tune fixed my slamming during shifting down on my automatic, also fixed it from slamming during shifting up, also fixed lagging and gaining RPM before shifting.

 

[Panterayall]

Same

Just took my Sonic RS in for the same auto trans problems...at least this is letting me know I was not alone....