Originally Posted by gruveb
One more question...how can I tell, without swapping known good parts, if the problem is the pcm or the prom?
On this one I think we will have to follow the service manual... But an SES with no codes would lead me to the PCM... I have rarely seen the EPROM fail.. Have you pulled the cover off of the PCM to ensure that the EPROM is seated?
Thats the first thing the service manual says...
Also what engine is in your car? 3800 Series I Supercharged Vin 1, or 3800 Series II Vin K?
The computer in your car was used for 2 years in a wide variety of C and H body GM full size cars with the 3800 line...
Sometimes even with newer cars its still a task to get problems solved...
Anyone else have any thoughts?
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