Question about 2003 Pontiac Montana

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Thermostat Is it as hard as they say to replace the Thermostat on a 2003 Pontiac Montana? Is this a do it urselfer or should a professional handle this one?

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  • yes_yes_yes Aug 06, 2008

    Thanks, Looks Like I'ma give it a shot. There is nothing we can not do if we take our time and put our minds and souls into it.



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The only hard part will be removing the exhaust crossover pipe. This piece must be removed in order to get to the thermostat housing. Other than that all you have to remove is the air cleaner box and pull the hose off of the housing. Getting to the bolts is a little tricky, but a hand do-it-yourselfer can usually find a way to get to them. I'd recommend finding a couple of long extensions once you get to that point

Posted on Aug 05, 2008

  • Roger That Mar 12, 2015

    The exhaust crossover pipe does NOT have to be removed. Granted, having the crossover out of the way makes the thermostat replacement easier, taking the steps to remove it adds a lot of unnessecary time. it just gets a little tricky getting the rear thermostat housing bolt



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