Hello,
I have a 1227747 ecm with the chip marked as "ADUS". This is in a street rod with early to mid 90's 4.3l that has vortec heads and TBI that the previous owner said was from a C or K van, but thats all he knows. I can't find any info on the ADUS chip, can anyone tell me what vehicle this was originally used in? I'm kind of in the dark when troubleshooting or needing a sensor as to what vehicle the part is for. Thanks