Question about 2003 Saturn VUE

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Saturn VUE 2003 Thermostat Housing--how to replace?

Thanks for your response yesterday to my question about the coolant temp sensor. I have since discovered from my local auto parts store that it is actually the thermostat housing that needs to be replaced. How do i replace it and where is it located?

could you possibly send a picture or a schematic or tell me where i could locate one?

thanks again

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  • Anonymous Mar 13, 2014

    how do i remove sending unit on thermostat housing for a 94 corolla

  • Anonymous Mar 13, 2014

    how do i remove temperature sending unit from thermostat housing for 94 corolla

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  • Saturn Expert
  • 62 Answers

I would recommend factory parts only for this application. Find a Saturn dealer and ask for the thermostat housing, and it should include the thermostat. It is an updated part due to the thermostat sticking issue. As far as replacing it, the thermostat is below the upper and lower intake manifold. You need to pull the upper manifold up out of the way. To do this remove the 6 T-30 bolts holding it in place. There is a connector they will be below the intake on your right, this needs to be unplugged before pulling the intake up too far. The lower intake may have internal or external torx bolts depending on the year and date produced. Remove all 12 bolts and pull the lower intake out and the thermostat will be on your left, between the cylinder heads near the timing belt cover. There is a solid tube that connects the upper radiator hose to the thermostat housing, it is attached to the engine by an external torx bolt near the oil dipstick tube. Remove the hose from the transfer tube, then unbolt the tube and twist back and forth to remove. DO NOT pry on the bolt flange of the tube this will break off and then you will need a new tube. Keep twisting and pulling and the tube will come out. Once the tube is out simply unbolt the thermostat housing and install the new one. A couple tips for this, one is don't drain all the coolant, just remove the upper radiator hose from the transfer tube and drain whatever comes out of there. Draining all the coolant will introduce alot of air into the cooling system which will be tough to remove. All the air has to be out or the engine will over heat. You will only need maybe half a gallon of coolant if this procedure is followed. I also usually over fill the coolant a little to allow for any air trapped in the system to escape with out lowering the coolant level far enough to turn the low coolant light on. The labor for this job is about 2.5 hours for a professional, if you haven't done much work before allow at least double that to complete this job. Hope this helps.

Posted on Dec 17, 2008

  • bill mcilrevey
    bill mcilrevey Apr 29, 2014

    i have a cylinder vue 2003 were is it located

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