I have a 99 malibu 3.1 j model what are signs pcm is going out!
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i know about the over heat problems i have finally got the air out of the cooling system my gas gauge is going to full & back & fourth but i no for a fact that there is only a couple gallons it says 1st the # 5 cyl missfire then it went to #6 then said misc missfire & it says my evap circut something is wrong car dosnt missfire tell the thermostat opens then it runs like dog snot it dosnt overheat but the missing has me stumped maybe the damn lower intake is leaking but if anyone knows what a bad pcm does please help thanks!
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