U1016

[joecar]

Pulling the module's wire at the star is ok, no need to disconnect battery.

[mr.prick]

with only the PCM on the bus i still get no connection.
the fuel pump still recycles after cranking stops.

GM.VTD shows vehicle theft deterrent fuel system - enabled
i also have 2.5 volts at the BCM fuel enable wire when it should be 5 volts.
it is 5 volt without the BCM plugged in and,
the key signal feed/return wires give "1.__" with the BCM plugged in
with the BCM unplugged i get the same resistance as my key.

LOL
is it possible that the BCM would keep the PCM from being flashed if in
a permanent theft deterrent state?
seeing how it is the security system

i imagine this would be the case to keep someone from swapping PCMs/BCMs
to steal the car.

i know the VATS relearn procedure,
are there steps to reset that so i know it in relearn mode?

[joecar]

with only the PCM on the bus i still get no connection.
the fuel pump still recycles after cranking stops.

If the PCM continues to cycle the pump, then PCM is bad.

GM.VTD shows vehicle theft deterrent fuel system - enabled
i also have 2.5 volts at the BCM fuel enable wire when it should be 5 volts.

It's a 5V square wave, so you will see 2.5VDC (rms).

it is 5 volt without the BCM plugged in and,
the key signal feed/return wires give "1.__" with the BCM plugged in
with the BCM unplugged i get the same resistance as my key.

LOL
is it possible that the BCM would keep the PCM from being flashed if in
a permanent theft deterrent state?
seeing how it is the security system

i imagine this would be the case to keep someone from swapping PCMs/BCMs to steal the car.

I don't know... when I swapped my PCM I could still start and run for 2 seconds before relinking VATS.

i know the VATS relearn procedure,
are there steps to reset that so i know it in relearn mode?

Try relinking VATS.

[joecar]

When VATS is active, the PCM does not fire the injectors.

[mr.prick]

If the PCM continues to cycle the pump, then PCM is bad.

It's a 5V square wave, so you will see 2.5VDC (rms).
.

does this mean that once the BCM is connected to the harness the voltage should drop by half?
also the key feed and return have no resistance when connected to the BCM.
VATS and all the other tune.exe options are locked out because of the non connection.

this was happening with my RR and stock PCM.
i don`t see how both of the could be crunked but anything is possible.
this problem was intermittent.
last time the car would not start/run i found i could not read the VIN through the RR
all else was fine, i could upload/download.
i put in the stocker and it would not upload/download.

i just hooked up flashscan to my laptop to run HAPI and it won`t power up.
i seem to have a short in my USB cable.
and HAPI won`t load.
maybe this is why i can`t flash and, maybe something is wrong with the car.

LOL the drama

[mr.prick]

a new USB cable did not help with connection.
some codes
P0103
P0103
P1626
U1000
U1000
U1016
U1040
U1096
the MAF codes can be explained by the tune installed on the PCM
but the P1626 is VATS and it is accompanied by the U network codes.
as it always is.

i need to find out why HAPI won`t load either.
it is in my firewall and i turned off the firewall and it still won`t load.

[mr.prick]

here's a log after i got it started.(don`t ask me how)

Log_ME_0000.efi

as you can see it is pretty whacked out.
spark advance is all over the place, most likely due to
swapping PCMs without uploading the tune that was in the RR.
the tune in the stock PCM is from long ago.

[joecar]

here's a log after i got it started.(don`t ask me how)

Log_ME_0000.efi

as you can see it is pretty whacked out.
spark advance is all over the place, most likely due to
swapping PCMs without uploading the tune that was in the RR.
the tune in the stock PCM is from long ago.

This may mean the PCM has failed:
STATE04-NVM "non-volatile memory" = Failed

This may also mean the PCM has failed (it is not controlling the altenator):
STATE01-ALT-L "alternator L terminal" = No Voltage

[mr.prick]

This may mean the PCM has failed:
STATE04-NVM "non-volatile memory" = Failed

This may also mean the PCM has failed (it is not controlling the altenator):
STATE01-ALT-L "alternator L terminal" = No Voltage

bad alternator/connection to = no connection to the PCM?
this wire has 9.5 volts with IGN on.
0 volts ING off.
to PCM red 15 - audible

the car has started 3 times even with an outdated/bad tune installed.
now it won`t start again.
unplugging the BCM the plugging it back in gets the car to start and run.(somewhat)

again i wonder if the BCM can cause havoc with the communications between modules.

could someone with an fbody unplug your BCM and see if you can
read/check status of the PCM......please.

[joecar]

I'll see if I can do this tomorrow...