This forum is convinced it changes the shifting and defueling.

http://dieselplace.com/forum/showthread ... ost1622436

Whats the difference in Manual/Automatic when starting the 65hp tune in U7180?

My guess is the tune is the same except the manual does not defuel during shifts.

Thanks for the answers. (to all three questions)

1. Is there a data viewer for the u7180?

2. Are there any plans for a data viewer, or do we need to use EFILive?

3. Could the code be added for a data viewer?

The dealer checks the vacuum at the fuel port (black plastic covered brass schrader valve) directly above air conditioning pump. 2Hg for a fresh filter and full tank, at 5 to 7Hg they replace. So it's not monitored electronically. There are Vacuum/pressure testers available that fit that particular ...

Is there a data viewer for the u7180, I'd like to view logs on my 2004 LB7 Duramax. Will the viewer for LLY work?

Thanks