Sure, I added an updated xdf to the first post :) And there's a lot more, beyond the A/C type switch.

Thank you Chas for your feedback! I have fixed those issues, see xdf V5 in the first post :)

Version 4 of the 12212156 released! (in the first post) Enjoy! :)

Added new parameters:
- Cranking VE Baro Multiplier and Calibration Temperature,
- Commanded Fuel For Extended Cranking,
- MAF...

Hi, thanks for your kind words :)

I checked the DTC tables, and you're right - there were mistakes in some row labels. I fixed that in version 3 of the xdf that I just attached to the first post...

I have finally found time to finish OS12212156 xdf work. The XDF is added to the first post.
This time it's rather thoroughly tested so it should be safe to use. Please let me know of any issues you...

Thanks for the input everyone! I'm sorry that my files caused some trouble, I spent quite a lot of time on them in order to reprogram some stuff on my friend's 2002 Camaro, but then he sold the car...

I'm sorry to hear that you bricked your PCMs, I tested only a few parameters on a real PCM, but the checksums appeared to calculate correctly. Please send the original and modified bins along with a...

Hello everyone! Some time ago i've been asking if there was any progress on 12212156 OS .xdf files. As apparently there have been none, I went ahead and made them myself.

[EDIT]
I have fixed...