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View Full Version : 16197427 ECM upgrade



v8zspeed
06-21-2022, 12:33 AM
If you’re looking at upgrading your 7747 to the faster 7427. Here’s your chance.
i have a 7427, already has the G2 chip adapter and 512 eprom in it. Also has new connector backshells to replace your original connectors. Also has the new correct knock sensor.
All you need is the pin extractor and your favorite programming software.
$120 shipped.

94TBI
07-13-2022, 07:19 PM
Hi v8zspeed,
Do you still have this ecm?
I have a 1994 GMC c2500 7.4l 4L80E and I believe it will work for me.
Thanks let me know