^found some stuff on that in this thread:
http://www.automotivehelper.com/topic516221.htm
I checked the PCM grounds but I'm going to check others.
Quote:
Originally Posted by DemonWithin99
stop trying to diagnose it and chase th ghost just replace the damn opti already....
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You think I should just go and replace the opti? That's foolish. Process to problem solving: locate issue --> fix it, dont just assume what it is (like you and many others hear LT1 issue and call out "woop must be da OPTI LOOL") and go buy a new opti and go through hell to replace it and still have the issue a lot of good that would do.
Furthermore if I do end up diagnosing a faulty opti I'll either replace it with a GM one not an auto zone junk, or dive right into an LS swap. I'm leaning towards saving $$$ replacing opti and using it to do the swap.
I have a spare opti on my shortblock btw to try...
