Excellent! Glad I could help.

Since you have a method for writing bin files to the PCM, I'd recommend using the V1.0a file as the base tune and then use TinyTuner to edit it for any further...

Will your software let you open and write a standard .bin file to the PCM?

I used the GM TIS website, along with a random VIN for a 2004 Impala with an L67, to figure out which OSID's are...

I compared the pin assignments, and the things that stick out to me aren't any differen't than what you've already said. C2 19 on the 2004 is an oil pressure switch input and not present on the 1998....

I do have some 3800 Series II experience so maybe I can help. Flashing a 2004 bin file to a 1998 PCM won't work. There is some interchangeability between PCM's, but not in that case. Your tuning...

I have a Tech 2 clone from china and it's been working quite well as a diagnostic tool. I know these can flash PCM's with stock BIN files from GM to perform updates or for PCM replacement. Word on...

Awesome! Thank you!

This completes getting all the software loose ends tied up, I'll start PCM hunting at the junkyard and we'll see if I can manage to do a LS1 tune for no other cost than the AVT...

I did see that but I got scared off by the initial comments about bricked PCM's. I guess I should have kept reading to see that development and debugging had continued. Thanks I will grab those files...

I am looking for the stock BIN file for a 2001 Express Van 5.7 4L80E for an 0411 PCM. I've searched around this forum but I'm having trouble finding this file. I figured this would be a fairly common...