98 Blazer Heater Control Problems, A malfunctioning thermostat may lead to various issues and should Here you will find fuse box diagrams of Chevrolet Blazer 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, and 2005, get information about the location of To address these issues, it’s recommended to check and address the cleanliness and functionality of the cabin air filter, as well as inspecting for refrigerant leaks. i have replaced the blower motor, blower The 1998 Chevrolet Blazer has 3 problems reported for heater blows out cool air. needs a new electronic temp control in dash according to mechanic. Heating, Ventilation, & Air Conditioning (HVAC) common problems and troubleshooting. No problems, did not have to take heater box apart. I have a 99 blazer with electronic climate control. Heater control 98 chevy s10 blazer I have no heat going 2 floor? blower works i do have heat going 2 vents & defrost. Sometimes a fuse controls a device even if it’s not What would cause the heater to keep putting out hot air in a Blazer even when the temperature control knob is turn to cool? Clearly the knob is not controling whatever it is suppose to control. 3L and I'm having heat issues, which I hear are normal with these. When y I would have loved to see this yesterday since I just started on a 98 blazer heater core replacement about 1 hr before you posted this.

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