Kick from 2-1

[HDJ]

So I have a 2012 ve sv6 lfx auto and sometimes not all the time I get like a kick feeling, like it comes when it goes from 2-1 it’s almost like it’s changed gears very quickly, I also don’t hear anything I only feel it. Also happens when at a slight incline sometimes when I re accelerate it like does the same kick sometimes not all the time.