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Tuning 4l80e

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Old Aug 10, 2014 | 07:45 PM
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03 BLKTAHOE's Avatar
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Default Tuning 4l80e

Well I swapped out the 60e for the 80e. I bought the wiring connection conversion and the extra speed sensor and had Hp tuners do the segment swap.

My question is now I need to have the 80e tuned or it won't shift right?
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Old Aug 10, 2014 | 08:00 PM
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If the segment swap was done, it should act and shift like a regular 4L80 transmission.

It's up to you if you want to tune it further.
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Old Aug 11, 2014 | 07:39 PM
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Originally Posted by FFDP
If the segment swap was done, it should act and shift like a regular 4L80 transmission.

It's up to you if you want to tune it further.
I thought by getting the segment done it would shift but to get it even better have it tuned for the 80e.

But I was told that with out a tune it won't shift right period?

The problem I'm having is I've swapped out the 60 for the 80 installed the conversion harness and the extra speed sensor. But when I put it in reverse it doesn't really won't to move and of what little it does it wants to move forward while it's in reverse?


So right now it's either: ignition switch, tune or something else?

I done a lot of research and for the codes it was coming up with that I needed to replace my ignition switch.

But then I was told that it was it wasn't tuned and it won't shift with out a tune?

I really appreciate any help please!
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Old Aug 11, 2014 | 08:26 PM
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I've been googling performance shops in north GA and Southern performance systems came up of any of you delt with them? Or recommend a shop? Just trying to explore all my options...

Thanks
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Old Aug 11, 2014 | 08:26 PM
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If you have had a segment swap done and flashed, it should drive fine. Tune will just modify shift points and firmness. Use your scanner to activate the shift solenoids with the key on engine off to verify wiring. Who built your trans??
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Old Aug 11, 2014 | 11:40 PM
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Originally Posted by 1969x11
If you have had a segment swap done and flashed, it should drive fine. Tune will just modify shift points and firmness. Use your scanner to activate the shift solenoids with the key on engine off to verify wiring. Who built your trans??
How do I use my scanner to activate shift solenoids with the key on engine off to verify wiring?

I built my trans yes it was my first time I had the book and a video and took my time and I'm positive it's something simple. I basically would like to rule everything else before pulling the trans.
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Old Aug 12, 2014 | 02:46 PM
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The bidirectional controls in the scanner will activate the solenoids .Been there on the home built 80e...just got mine back from a pro builder.
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Old Aug 15, 2014 | 07:26 AM
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Southern performance does good installs. They do mediocre tunes but they are really cool people and I recommend them
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