Mechanics

PONTIAC GRAND AM COOLANT PROBLEM

1999 Pontiac Grand Am

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
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Nico18062
February 4, 2013.



It could be brittle from the under hood heat. If the coolant leaks from it, it will need replaced.