feeling stupid... where is the thermostat on a 2007 B9 Tribeca?

Oh dude, don't feel stupid. That's why we're here. Sometimes t-stats are in the oddest of places. Best access to the Thermostat is from under the vehicle, after removing the plastic undercover.

http://www.justanswer.com/subaru/6tg8x-subaru-tribeca-limited-thermostat-2007-subaru.html

click the images. very few vehicles require lifting -Lift-up the vehicle. -Remove the under cover.

Nice posts above :)

Thank You walth

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