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The ECU stores every code ever entered forever, unless you clear the error memory. Those codes do not necessrily indicate current problems.

Clear the memory and see which, if any, codes return.

I suspect you just hit FC (#34).

bill
 

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Discussion Starter · #5 ·
I pulled the EFI. I drove it around the block and got CEL again. Code 52. I'm guessing my knock sensor needs to be replaced. Confirmation? If so, I'm going to get the GM sensor and adaptor from twosrus
 
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