06 Yukon 4l60E Not Shifting As Tuned

[Alvin]

Never understood why people ask for advise on a forum and then ignore it. It would just take a minute to zero out the misfire tables and test it. If that isn't it then put them back. Then even if it is a real misfire it won't detect it.

That's why I'll often quote others saying "I agree" because my suggestions sometimes will get overlooked. 22 years of experience doing this M-F 9-5. You think they'd at least consider what I'm saying. Perhaps if there are a few saying the same damn thing they get the idea.

[edcmat-l1]

Newbie asks a question

Professional with decades experience gives logical answer

Newbie: "Nah, that ain't it"

Wash rinse repeat.