reading block learn values from GM EFI systems?

[Walter Sherwin]

Every ECM/PCM is gonna differ somewhat.  If using OBDI, how about issuing
something like either a Mode 2 or a Mode 3 data dump command, to spit
relevant address values out the ALDL port upon request?  Or, how about
modifying your Mode 1 data stream profile to include the relevant BLM values
in place of other less useful parameters, and then stream the BLM's to your
ALDL tool?  OBDII would be different again.  If using an emulator, you may
be able to extract these values directly via the editor interface?  Kind of
depends upon exactly what you are working with.



> Does anyone know of a way to read/view all of the individual block
> learn/fuel trim values for each cell/block that are stored in the ECM/PCM
> (when retaining block learn values is enabled)? Could this be obtained
> through the diagnostic port or copied off of some internal chip?
>
>
> Jason


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