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Chevy Tahoe
Meteorology and Weather
Dog Care

What would cause the Heater on a 2000 Tahoe not to get more than warm?


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Wiki User
April 04, 2009 5:35PM

First change out the themostat. If problem persists , it most likely is the water pump. Too much clearance around the impeller causes slow water movement and does not circulate to the heater core properly.