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Changing thermostat in 1999 gmc yukon

There is a hose that runs over top of the gooseneck. I am not sure what it is and if I can disconnect in order to remove bolt the change out the thermostat.

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  • shelly4223 Dec 16, 2008

    the coolant hose is attached to the gooseneck which is held on with two bolts. The hose I am talking about might be an auxillary hose and it curls over top of one of the bolts not allowming me access to the front most bolt.

  • Anonymous Feb 22, 2009

    Just did this yesterday new radiator and thermostat. Did not know about having to put in the same direction. I am not aware of the direction I put it in either. Now my temp guage does not work....are they connected or is there another problem.

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Thermostat housing will be located top center of you engine it should have 2 bolts holding it down. Be carfull you may need to drain out some antifreeze before you remove ,and never remove while hot. Thermostate just sits inside this housing.make sure you install the new one in the same direction the old one is in.
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Posted on Dec 16, 2008

  • Roscoe007 Dec 16, 2008

    Try to push that hose out of your way to reach the bolts,never cut ! If you could post a picture it would be great , but thats normal for this type of job.

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That hose would be the coolant hose going into the thermostat

Posted on Dec 16, 2008

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