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I use HPTuners.

It doesn't maintain 15.1, it varies between 14.8 and 15.1 - according to my wideband that I run constantly. Maybe yours does as well if checked with a wideband? I need to...

Already got it fixed, but thanks! I basically just put an 08 Silverado 2x4 tune into the ECM/TCM and that solved my shifting issues. :rockon:

F350 running gear, V8 swap, 1/4" thick steel plate panels, bumpers, roll cage, etc. add up!

P0106 is because the MAP min/max values are incorrect. Look at your tune and see if there are tables...

It might only be a value the other guys use - I don't have EFILive. :doh2:

As I mentioned in the other thread, I have my VSS on the output shaft of the trans and mine shifts the same, regardless of where the TC is. So maybe this and a 2wd tune is what you guys need? And a...

The only VSS I have is on the trans output shaft and mine shifts the same regardless of TC gear.

Ther'es a few things you can do in the lean cruise area to get it to stay in V4 mode longer.
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I don't have access to the TCCM or TC from the donor rig. I also am running an Atlas transfer case, fully manual. So if I don't need to add all of this extra stuff or downgrade TC's, I'd be happier.

I don't believe the other guys work this way, as I don't have EFILive. :doh2: I believe with them I have to license the file and then relicense the ECM with the new VIN. But we'll see. If this...

The problem is there was apparently never a 2wd version of my donor - I've been playing with that over the past week, before I even saw this thread. I went through the trouble of making a new VIN...

Dredging this back up from the dead.

I just put an 08 Sierra 4x4 5.3/4L60E into my 04 Jeep Wrangler and I'm having the same weird shifting issues - no wot/partial shifts. Well, not always. In...