All factory applications use a different part number gas pedal for the 8 speed. Something to do with the 2nd gear downshift. Pedal has heavier feel near bottom of travel. And is suppsed to signal the tcm or pcm for downshift? Yet any info on gm repair guides, do not show a seporate wire or trouble shooting for this so called signal?

What happens if I use a 6l90e pedal or non 8l90e pedal? The pedal I want to use seems to move the tb, no error codes? But it's not from a 8speed. What will happen maybe when driving it will set some sort of code? Or never downshift into 2nd? I'm so confused?