Originally Posted by
NomakeWan
Apologies, I didn't know you had a 7427. That is in fact a 27C512 holding 64 KB of program data, non-stacked. I don't use the BURN2 to read/write chips, I use the TL866, but I have to assume they are similar in operation. So were I in your shoes, I would merely make sure that I had the correct model number for the chip set in the BURN2 software (it does come with software of its own, right?). On the TL866, reading and writing is done simply by telling the software what model number the chip in question is, and it does the rest.
Use your ALDL cable of choice to connect your computer to the vehicle's ALDL port. In Flashhack's main menu, select "ALDL Universal Read" and then click Run. By default, Flashhack is configured to address an ECM at ALDL address F4 (which should be correct for you) with a program size of 64KB (which is correct for you). It's also programmed to automatically detect your ALDL cable. So all you should have to do is click "Read Calibration" and that's it. Once the read finishes, click "Save Bin" to save the file.