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2000 Chevy truck heater not working?

Updated: 10/21/2022
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Wiki User

16y ago

Best Answer

you probably need to flush the coolant system. GM claims that the coolant is good for a ridiculous number of miles, but it is not so. The coolant breaks down and forms large clumps which will clog up the heater core. You may need to flush several times to get it all out.

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16y ago
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Q: 2000 Chevy truck heater not working?
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