ECM Tolerances? EEPROM PCM in LT1

peter paul fenske ffnsp955 at bcit.bc.ca
Thu Aug 20 22:00:36 GMT 1998


Hi Larry

Actually there can be many different cals.
There prob are at least 12 for you application.
You wouldnt believe gms revision system.

And yes two identical by PN.? O2 sensors can have 
different curves

The esc module I think is under a little door on
top of the 8051 PCM. You may examine it to see
if it is the same.

Also if you pull PCM open you will see some
variance in boards..

Well gl :peter

One of these days goona haveta look
at that 8051 on my bench Bruce.

At 01:03 PM 8/20/98 -0500, you wrote:
>	Peter wrote:
>
>	>Hi Larry
>	>
>	>Not sure. Please take this with a grain of salt
>	>
>	>1.      An 8051 PCM can have different cals.
>
>	I know this...but we both have 94 LT1's with identical engines,
>and manual transmissions. The only difference is the PCM I borrowed is
>from a Pontiac and mine is a Chevrolet. Same part numbers though...
>





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