Talked with my GM mechanic today who had just finished talking to a GM engineer on his HELP line...sooooo here goes The slight bog/hesitation on the automatics(with or without the T/C engaged) at WOT is WHAT THE CUSTOMER HAS TO LIVE WITH...chevy built it that way to slow US down and keep from beating OUR SSRs hmmmmmm...410 gear....is not acceptable to CHEVY...any change will void warranty....3.73 is WHAT THE CUSTOMER HAS TO LIVE WITH... guess I will have to accept a no problem SSR ( nothing broken,overheated,etc great SSR) Then again Ive read online about the hypertech and diablo programmers and will most asuredly use em when THEY finally come to pass. The gear will be changed to the 410 .... SO we shall see BEST to all