Cascade Crew

blue89 · Posted: Mon Nov 28, 2011 9:20 am Post subject: V6 ecm/eeprom

Was there a change in v6 ecm's from 85-90, between pontiac amd chevy, and manual to automatic? My brother has an 85 berli that has a blown injector driver and he is trying to get a new ecm. I thought that all of the ecms and eeproms where the same aside from the 3.1L SD setup in 91.

Thanks.

Edit: the ecm he has installed is a 1227302. Not sure if thats right for his car.

blue89 · Posted: Mon Nov 28, 2011 11:02 am Post subject:

http://www.exatorq.com/ludis_obd1/c3xref.html

I believe he has the 1226870 stock. He has installed a 1227302. How do you know what bin to put with this ecm?

More importantly, does anyone know the difference between the 870 and 302? They appear to both be used in 86. I figured it must be a pontiac/gm thing. Any help would be great.