Changing operating systems. From 12587604 to 12587603

**B52Bombardier1** · 11-22-2021

A BIN is not hardware. Those four numbers above correspond to actual PCM hardware devices and you will find those hardware numbers on the PCM adhesive label sticker.

Rick

**creativelemon** · 11-22-2021

Originally Posted by B52Bombardier1

A BIN is not hardware. Those four numbers above correspond to actual PCM hardware devices and you will find those hardware numbers on the PCM adhesive label sticker.

Rick

Ok that makes sense, im not looking to change my pcm though. Just change the OS to a more tune-able os.

**dave w** · 11-22-2021

I'm hoping to add an OS option that will be helpful.

The 2002 Camaro LS1 engine is nearly identical to the 2004 GTO LS1 engine.

Perhaps using the 512K PCM (aka '0411) and Operating System 12212156 from a 2002 Camaro is an option? http://gearhead-efi.com/Fuel-Injecti...light=12212156

The 2004 GTO wire harness might require a few wiring changes for the 512K PCM, NOT a whole new harness.

dave w

**creativelemon** · 11-23-2021

Thank you for your help I really appreciate it. However im not sure how having to modify the wire harness is easier than flashing the 04 vette tune. Correct me if im wrong but For some reason it shows that it does in fact have iacv tables? If all i have to do is copy the tables over surely thats easier than modifying the wire harness. None of this would be needed if they made an xdf for my OS :(

**creativelemon** · 11-23-2021

Im not looking to change my PCM. If what im asking about (changing just the OS) is not possible than I'd rather live with my pcm and os

**dave w** · 11-23-2021

I use TunerCats OBD2 $oftware. Based on the .bin files posted in this thread 04 Vette vs. 04 GTO . . . The 04 Corvette is Drive By Wire.

dave w

vette vs GTO.jpg

vette vs GTO. System.jpg

**creativelemon** · 11-23-2021

Thank you for your help it was very informative. So I'll have to wait on doing an OS swap if its even possible. The easiest way would probably be save up for hptuners

**creativelemon** · 12-12-2021

Im curious if anyone knows about maybe disabling the DBW area in the vehicle options table? because even the vette has IACV tables. I also know some chevy express vans used OS12587604 and they were drive by cable.