Quote Originally Posted by LRT View Post
Why go to the bother ? I mean that seriously - it will take hundreds of hours to complete accurately and fully.

The 1Mb PCMs (Blue and Green connectors) were primarily used from 2003 to 2006 (some 2007 models continued to use this PCM). There were literally dozens of operating systems (OS) used by GM for these PCMs.

However, 2004 OS 12587603 may be considered a "universal donor". All 1Mb PCMs can be programmed with this OS. This OS was used by 2004 Corvette, Truck, SUV, and full-size Van. This OS will support all transmission types, Drive-by-Wire or Drive-by-Cable, and Flex Fuel operation.

There is a fully complete XDF for 2004 OS 12587603 available here - see post #3:

http://www.gearhead-efi.com/Fuel-Inj...d-is-TunerPro)

There are 2004 bin files available here:

http://www.gearhead-efi.com/Fuel-Inj...rPro-Bin-Files

With a 1Mb PCM, using this 2004 OS is a quick and easy option.
so i should just write one of these bin files over my existing bin file using the write function on my ls droid thats on it now to my pcm your saying ? then i can use the 603 xdf file ?