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In the process of reading my PCM
I have OSID 12579405
I found the bin for a flex fuel but it?s a rwd model on the following page
https://pcmhacking.net/forums/viewtopic.php?f=42&t=6208&start=20...

First of all, Thanks a ton for all the help! I was doubting if I should go through with this thinking I?d have a hard time getting any help if I ran into any problem and here you are helping and I...

Just to make sure I?m following along right and since I?m new to this, I would have to put my engine and engine diag segments into the OS you have available? If you have it available that?d be great....

Ahh that makes more sense. I could turn fFF on but would have to manually define the tables tgat I would need. I think it opens up a lot of room for user error to do it manually unless it could be...

I?m going to try my luck with getting used stock injectors. At $20 each I think I should be at a good enough point to try out this project. If everything works well I?ll look into getting new ones.

I?m unable to see any files from the repository until I register the device I ordered, but I have an 03 Sierra 4x4 5.3. I?m assuming I?ll have to find a file for any 03-05 FFV or would it have to be...

How?d the project go? I?m attempting to do the same for my 03 Sierra.

I?ve got all day doing research I just realized once I posted you already said any P59 can be, does that mean that some P59 aren?t but can be made to be, or that they all come with the option to run...

I have a stock 2003 Sierra 5.3 non Flex fuel, how would I know if the stock OS can run flex fuel? I just ordered the Hp tuner so I can attempt to do this but just saw your post saying OBDLinkSx cable...

I thought if it had the enable switch it was a FF OS. Would that mean I would have to get the OS from another vehicle then?

I have a 2003 Sierra 5.3 not a FFV ? is there any way of checking if the stock OS has the flex fuel tab for installing the flex fuel sensor? I just ordered the tuner but trying to get some info...