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oil in cooling system-low tire pressure stays on
Looks like the oil cooler failed internally and let the oil sweep to the cooling system.
In this case you need to replace the oil cooler and flush out the cooling system - sometimes 2 or 3 times to get rid of the oil.
Q&A > Chevrolet > 2002 Chevrolet Impala
Q&A > Chevrolet > 2001 Chevrolet Impala