Re: ECM part numbers?

["Bruce Plecan" <nacelp@bright.net>]

> Hate to question the experts... does it really work to put a prom from a
> manual trans ECM into 4L60E or 4L80E PCM?  And the other way around?

Big difference in work and will be correctly calibrated.  Just stating that
unlike trying to run a 808 cal in a 730, or 730 in a 808 neither way will
either work, as a plug in.

> Then Ludis wrote:
> >If you check the schematics for the manual transmission V8 trucks,
> >you'll see that the pinout is the same as the '747 ECM.  It looks like
> >GM kept using that old design where possible until they were forced to
> >switch to OBD II.  It is possible that GM created a P4 (or newer) with
> >the same pinout, however, the schematics show no P&H vs. port injection
> >mode selection jumper as is common on the P4's.
> Now I'm confused.  Grumpy said the man trans part # is 16156930.  Ludis'
> WWW page says 16196396.  Ludis says 396 is similar to 1227747, but the
> schematics Grumpy sent don't match at all with the 747.

I hope someone else can check in on this, I think my source is wrong, but
that's a guess.
Grumpy
>
> I want to make sure the WWW page is correct, can someone please
> straighten me out?
>
> The applications I have are (this info is right off the scanned pages):
>
> PCM, 4.3L, 7.4L C/K manual trans, 2 32 pin connectors
> PCM, 4.3L, 5.0L, 5.7L C/K 4L60E, 2 32 pin connectors
> PCM, 4.3L, 5.7L, 7.4L C/K 4L80E, 2 32 pin connectors
>
> The model years should all be '95, the date on the lower right corner of
> all pages is 4-18-94
>
> Is #1 (the man trans ECM) a P4 with 8192 baud ALDL?  If it is then it
> would be a good candidate for replacing a 747?
>
> --
> Steve Ravet
> steve.ravet@arm.com
> ARM,Inc.
> www.arm.com
> --------------------------------------------------------------------------
--
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo@lists.diy-efi.org
>
>

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo@lists.diy-efi.org