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Re: 98 Blazer antifreeze smell - no leaks?
Smell from heater vents points to heater core leakage.
Any fog or steam to go with the smell?
Any smell under hood area?
Will it leak in the heater core area with a pressure test?
They also make a dye to put in the coolant to test for hard to find leaks.
One other area to check is where the heater hose goes onto the heater core.
Sometime a lose heater hose there will squirt coolant back into heater core box.
Stop leak is only a band aid and may cause other major problems.
MT
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Remember proper testing gives us the answer to many problems.
MT
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