Most everyone here knows I've done several '427 upgrades. I'm converting an 89 Suburban 383 / TH400 from a 1228747 ECM to a 16197427 PCM. I'd like to program the AT kick down relay using the '427 EGR output. The question I have is the EGR output to the EGR solenoid of a 16197427 a ground signal or a +12 volts? I'm wanting to use the TPS settings for EGR ON / EGR OFF to operate the AT kick down relay. I was thinking that the EGR ON / EGR OFF parameters were a good option to control the AT Kick Down realy because the Temp settings, RPM setting, and MPH settings would become very convenient parameters to operate the AT Kick Down relay. The old 1228747 ECM used pin A7 to operate the AT Kick Down relay with a ground signal.
Thanks,
dave w
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