problems with Diacom and LT1

[Sauck, Al]

I have a 1992 Vette with ECM 16159278 and the Diacom Plus software running
on an old 486 laptop.  I recall some difficulty initially getting the setup
to work although it is reliable now.   Have you connected the accessory red
wire from the interconnect cable to 12 volts?

-----Original Message-----
From: NickG [mailto:nikog at mediaone.net]
Sent: Saturday, September 08, 2001 7:08 PM
To: GM ECM List
Subject: problems with Diacom and LT1


I'm having trouble getting Diacom to link to a 16159278 LT1 ECM. In a
nutshell, it just won't link.

Now, the ECM install is not OEM. It's an LT1 engine and ECM installed in a
60's Nova (I believe using an aftermarket harness). I've tried linking in
all the possible modes (ALDL, Diagnostic, Normal, etc.) and nothing. I do
hear a relay clicking on when trying to link (and off when hitting the ESC
key).

Does anybody have any tips on what could be going wrong?

Thanks,
Nick


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