Quote Originally Posted by noking View Post
Makes one wonder who programmed it this way and why.
"Consumer acceptance" is the usual reason. (Driveability would be the reason, I would guess.)

Make an automatic upshift "early" and GM would end up with 100% of auto reviewers (and some owners) complaining about the lack of power in the upper gears and the frequent downshifts needed to accelerate hard.

A "Power/Economy" button/programming would have solved the problem though.