Question about 2001 Pontiac Montana
If the cooling fans are coming on and the upper and lower hoses are both hot than I am 99% positive you have bad head gaskets. It's not uncommon on the 3.4 liter engines. To confirm, with the engine cold remove the radiator cap. Start the engine and watch the coolant in the radiator. If you see a constant percolation of air bubbles coming out of the radiator that you more than likely have a bad head gasket(s).
Posted on May 29, 2011
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Posted on Jan 02, 2017
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