Flushed coolant system, replaced radiator cap. A Tried Reprogrammed emc , light "turn off engine overheating" , when idiling. Fans keep running after car is off,AC on, no problems when ac off.
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What is the temp gauge showing? Have you rechecked the overflow-expansion tank level after several heat cool cycles? Have you tried any of the burping techniques generally suggested for GM vehicles?– mikesJul 9, 2020 at 23:36
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Does the car overheat with AC off ?– ajayelJul 10, 2020 at 8:03
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Flushed and burped the system. Replaced overflow reservoir cap. Only overheats with AC on while idiling. Leaking water on passenger side occasionally– GatkinsonJul 11, 2020 at 2:15
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