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View Full Version : Hello everyone!


lospheris
03-29-2021, 05:01 AM
I'm new to the forum. I got here by looking into MEMCALs for my dad to help him with a C2500 that he put a new 5.7L in and has been having problems with!
dave w
03-30-2021, 05:28 PM
:welcome:

What is the 5.7 liter computer part number?

dave w
lospheris
03-31-2021, 03:11 AM
Well the computer that is in it, and that it game with is 16197427. From what I can tell he should have a BNKM.

Here is the rub though. The engine he got for it, is a 5.7L, it isn't from a C2500, or even the same year.
dave w
03-31-2021, 07:57 AM
Is the transmission a 4L80E?
lospheris
04-01-2021, 01:43 AM
Yep!
dave w
04-01-2021, 03:37 PM
The 4L80E uses either definition file $OE or $31

$31: http://www.gearhead-efi.com/Fuel-Injection/showthread.php?338-16156930-PCM-Information-31

$OE: http://www.gearhead-efi.com/Fuel-Injection/showthread.php?337-16196395-PCM-Information-OE

1987 - 1995 VIN code "K" engines basically have the same injectors, camshaft, heads, and intake.

Using BNKM-$31-5.7L-4L80E.bin is a good plan.

dave w
lospheris
04-03-2021, 04:32 PM
Awesome. I had already pulled a $31 down to try to put in there if it came to that. There seems to be a lot of information out there on this stuff but there is a lot of it to sift through.

Out of curiosity, is there somewhere with documentation on what CPU is running inside the ECM?

Thank you very much for the information!
dave w
04-03-2021, 05:13 PM
I've read the 16197427 uses a Motorola Microprocessor,
lospheris
04-03-2021, 05:23 PM
That makes sense I suppose. Probably an old 68000 series chip, they ran tons of stuff back in those days it seems like.

Thank you!