Why does 1st gear slam into 2nd? 4L80E translplant

[1SlowHoe]

Bad computer? Or maybe the software is messed up? Now you have to figure out why the computer is not seeing the signal....

Maybe it's not the correct pin outs? Frustrating....

[LS1_Dragster]

Are you talking ohms or AC volts?

[1SlowHoe]

Are you talking ohms or AC volts?

First post was AC volts, second post was ohms.

[LS1_Dragster]

Ohms seem low, I think it should be ~400 Ohms.

So, did you replace the computer or mess with the wiring at all? What is the colors of the wires?

[1SlowHoe]

Just tore the PCM apart and I think the @$*%ing pins are NOT seated all the way into the PCM so they are not making contact with the wiring harness. GRRR I hope thats the issue. I'm sure thats why I'm getting the code but I wonder about the shifting. Prolly gonna be a few for me to mess with this.Take a coffee break LOL!

[1SlowHoe]

I'm pretty pissed and happy right now.
Pissed because it looks like the pins not making contact were causing all the problems.
Happy because I think its fixed. It shift sooooo smooth and soft

Attached is the log I took and the tune that was loaded. I went back to my original tune with just a few minor adjustments and it's pretty much awesome on the shifts. If you guys would take a look and make sure I don't have too much tq mngmnt or something else that might burn up the trans. I could actually stand to firm up the shift a little now

Joecar and LS1_Dragster, thanks for all your help on this. I know I was driving you nuts

[joecar]

When you measure a speed sensor using that particular DMM, set it to AC volts (~V), and press the Hz button...

as the speed increases so will the Hz.

[joecar]

Good job... ...so it was P0717.

TFMPRS looks good in your log.

Ok, I see you restored the shift pressures tables.

Also, try setting the shift times to 0.2s and see how the shifts feel... fine tune by adjusting the shift torque reduction tables.

Also (not related): set the throttle kickdown tables to all 100% (avoids conflicting with the PT up/down-shift tables).

[LS1_Dragster]

I in my opinion, think your shifting and TCC tables are off. I took my tables for the Yukon and changed your tune file. You may want to give it a try and see if it feels better to drive.

I'm glad you looked at the computer terminals, it was the only thing left other then a bad computer!

Lee

[LS1_Dragster]

So, do you have a blower on this? Your log shows a MAP value of 104 at part throttle....

Lee