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Q: losing anti-freeze on 2003 Pontiac Montana

the oil fill cap on the bottom of it has like a white foam and the dip stick is about 4 inches higher than it should be. would this be the intake manifold gaskets? if so how much does it cost to have this fixed at a shop?
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The intake or head gasket could be leaking on your 2003 Pontiac Montana - I would suspect intake first. Please use the RepairPal estimator to find the cost for these repairs. Here is a link - https://repairpal.com/estimator/pontiac/montana
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