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Re: 1996 s 10 blazer chevy, smell coolant burning when heat is on
Welcome to the forum!
If you smell coolant in the interior, the heater core is probably developing a leak. As the leak gets larger, the windows will fog, you may notice steam from coming from the registers, then coolant dripping from the heater case onto the passenger side floor, then puddles on the carpet. When using the A/C, the blend door is closed so you won't smell it, if you move the temperature selector to "warm", you'll probably notice the odor. Time to replace the heater core.
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