Question about 2001 GMC Sierra 2500HD

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Locating thermostats I was told my truck has 2 thermostats, is this true and where are they located?

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Who told you this??????? There is only one Thermostat in your Truck. Follow the Upper Radiator Hose to the Motor. Remove the Housing that the Hose is Connected to and the Thermostat is Under the Bell Housing.

Posted on Jan 10, 2009

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