GM ECU model/part numbers

[Gwyn Reedy]

The EPROM has ACHA and 0143 as well as DELCO overprinted. These markings are
much bolder than what I suspect is the EPROM manufacturer's ID which is:519k
8644 6065 06630 CE1090N.

There is a metal shield over the 40 pin chip next to the EPROM (is that the
memcal?) which has a bar code/number on it: 645036102431046

If anyone can help me identify this I'd appreciate it. If not will visit
local GM dealer and hope they can help.

Gwyn Reedy
Brandon, Florida
mailto:mgr at mgrcorp.com

-----Original Message-----
From: owner-diy_efi at diy-efi.org [mailto:owner-diy_efi at diy-efi.org]On
Behalf Of Shannen Durphey
Sent: Tuesday, September 12, 2000 8:22 PM
To: diy_efi at diy-efi.org
Subject: Re: GM ECU model/part numbers


There are a couple of things that might help.  1)  is there a prom or
memcal inside?  Read off the 4 letters/4 numbers that are on the
silver sticker.  Someone here can look that up.  2)  Does the ecm have
a socket for a prom or for a memcal?  3) call GM parts department,
give them your number. That # isn't anything I recognize.
Shannen

Gwyn Reedy wrote:
>
> Where do you find the number of the ECU (such as 747)?  I picked up a TPI
> setup and the ECU says remanufactured by GM. There is a Service Number on
a
> tape on the outside of the case but no other numbers I can find. The
number
> on it is 01270879 but that doesn't match the commonly mentioned TPI ecus.
> There are magic markings on the case that say 86 Firebird 305 TPI,  but I
> don't see that kind of service number as an ECU in any list I can find.
>
> So how do I figure out what I've got?
>
> Gwyn Reedy
> Brandon, Florida
> mailto:mgr at mgrcorp.com
>
> --------------------------------------------------------------------------
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