1999 Pontiac Grand Thing U Put Water Think Called Overflow Valve Got Hole Could

1999 PONTIAC GRAND AM
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NICO18062
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I have a Pontiac grand am and the thing u put water in I think its called the overflow valve it got a hole in it what could of caused that I just replace the thermostate
Feb 4, 2013 at 7:37 PM
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JACOBANDNICKOLAS
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It could be brittle from the under hood heat. If the coolant leaks from it, it will need replaced.
Feb 4, 2013 at 9:31 PM
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