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The stat is located under the plenums to get to it they have to be removed front top and back plenum. Once these are off then the coolant has to be drained via the bottome right rad hose. Also the centre bit that the injectors go into has to be undone this does't have to be removed fully but just shifted tot he left a bit to enable you to get the stat housing out. The metal pipe that the left top rad hose connects to has to pull out of the housing towards you. Easier to do this with the left rad pipe totally removed. Once the metal tube is out of the stat housing that the stat can be lifted up and out. stat replace then put it all back together. Sounds hard I know but if you do it you will se what I mean and although it takes time you shouldn't have any real probs.

Also be carfull of the dipstick pipe when remove the metal tube dont bend it to much or you will end up with a cink in the pipe.

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15y ago
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Q: How do you change the thermostat on x25 V6 Holden vectra?
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