I dont know if it would. But running rich I believe burns hotter. So internal cylinder tempK is higher. Hence the easier to burn. Alternator ahould be 12-14ish volts running. Fully charged battery should be around 12.5v if I remember correctly. Just trying to check all your bases. Ill go digging through my manual and see what gm says the alt should be at. Mine is around 12-14 though. Good test is to see if your lights dim while your try rolling all your windows up or something. But I think the alts are pretty sturdy in these cars.
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