Question about 2000 GMC Sierra

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I have no heat in my truck. Temp gauge shows 180-210 degrees. What's the problem and where is the stat located on the engine. Is it under the alternator?

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Hi:
If your truck temperature guage is reading 180-210, then your engine is at the right temperature, and your thermostat is fine. Most likely you have a problem with your heater core, which is located somewhat on the passenger side, under the dash. It is a small radiator, and if it doesnt have hot coolant circulating thru it, you wont get any heat.You could try to flush your cooling system, to see if you have any flow thru the heater core, but often you have to just change it. It can be quite a job to get to it, so make sure it is bad before you attempt repair.

Posted on Feb 06, 2010

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