04 Tahoe 5.3 Flex Fuel

**Professwrx** · 04-14-2023

I'm trying to find any information on tunerpro with this. I know nothing of this generation of PCMs. Can somebody tell me what Bin/XDF I should be on the hunt for to start tuning this?

Thanks

**brandongarnold02** · 04-14-2023

Do you know what operating system you have?

**Professwrx** · 04-14-2023

Originally Posted by brandongarnold02

Do you know what operating system you have?

Nope. There’s not a list of them somewhere?

**mattbta** · 04-19-2023

Originally Posted by Professwrx

Nope. There’s not a list of them somewhere?

Would need to read the properties from the PCM. And ideally, you'd want to read the entire PCM to BIN from your vehicle to serve as the base for tuning (and a backup in case you need to go back 100% OEM.)

My 2004 Tahoe L59 came with 12587603 (which has extensive xdf and considered a good donor) but I updated it to 12606960 for a couple enhancements. There's a WIP XDF for that, too.

**Professwrx** · 04-21-2023

Originally Posted by mattbta

Would need to read the properties from the PCM. And ideally, you'd want to read the entire PCM to BIN from your vehicle to serve as the base for tuning (and a backup in case you need to go back 100% OEM.)

My 2004 Tahoe L59 came with 12587603 (which has extensive xdf and considered a good donor) but I updated it to 12606960 for a couple enhancements. There's a WIP XDF for that, too.

exactly what I'm after thanks. my plan is to pull the base file and obviously save it. If there's not an XDF available for it directly, I'd probably look into disassembling it and/or comparing with the 7603 file to see the differences and if I can convert the xdf over. IDAs visual subroutine is awesome for doing this quickly.