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yes this a conversion vehicle.
no I do not have the OEM tune as my first laptop crashed.
sure has me stuck.
I am willing to bet I screwed it up somewhere.
57302

Having problems with OD and TCC and its stumping me .
They will work once then will not not work again during the same run cycle.
I can manually actuate them with bi directional controls and they...

1999 4.8l and 4l60e
A few weeks ago I had to repair the vss wiring but since then the pcm will not enable 4th gear or tcc.
I can manually actuate them with the scanner.
I have no codes stored and...

found the problem. missed a o2 ground when I remade the harness for my swap.

Thanks . I will check those monday

I have a similar issue
I cannot read stft or ltft and my scanner says disabled
yet in tuner they are enabled

newbie here.
working on a '99 4.8l
I must have disabled my fuel trims inadvertently I cannot seem to enable my stft or ltft.
they are enabled in the editor and the calibration works but my fuel...