ECM ID

[TBK]

I looked at some 89-91 Quad 4's and they had 1600 series ECM's, not the
expected 1200's. All of them can't be rebuild ECM's (most service
replacements are 1600's). Any idea where the 1600's are used?

TK
-----Original Message-----
From: bruce plecan <nacelp at bright.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Friday, January 30, 1998 4:27 PM
Subject: Re: ECM ID


>Orin
>There "should" be a paper label on the ECM itself.
>It will Either start with a 1227, followed by 3 digits,
>or 1615, followed by 4 digits.  If not a parts house might
>help, but I'd be more tempted to seek a dealership for
>id. help.
>The 1615 is the newer series of numbers for the ECM,
>may be for PCMs, only, anyone?.
>The 165 refers to a 1227165, 747 refers to 1227747,
>748, 1227748, and 749, 1227749.  BTW there seems
>to me more mention of the 148 rather than 748.
>The 165,+730 used in some GM Cars 86-89
>The 747 used in some GM trucks 87-93
>749 Syclone/Ty various other turbo applic, and others
>148 GN (86-87) TTA, and various other FWD
>HTH  Bruce
>