[Gmecm] How does the ecm "know" if it is an auto or manual trans ?

[DV Fagan]

Phillip,
There is a single bit within the first ten bytes of
the PROM which specifies manual or auto.  Look at the
disassemblies of your code set to find it.
Dennis

--- Phillip Kuhn <pmkls1 at yahoo.com> wrote:

> I am curious about this as I dont see anywhere in
> the
> editing software to program for an auto or manual
> trans. I plan on using a $58 code in my 240sx and
> the
> bin I downloaded is for a sy/ty which of course were
> all autos. I still have yet to see anywhere at all
> to
> "tell" the computer what type of trans the vehicle
> has. I thought I knew a lot about GM cars and how
> they
> worked as I was a GM tech for 6 years but lately I
> have found that my knowledge was a lot more limited
> than I thought. Of course over the last 6 years most
> of the ecm's used for ecm conversions have long been
> obsolete but I have still been under the hood of
> plenty older cars. Anyhow if somebody could answer
> that question for me I would greatly appreciate it.
> Thanks,
> 
> Phil
> 
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