Disconnect the electrical wiring harness.
98 chevy blazer heater core problems.
The 1998 chevrolet blazer has 1085 problems defects reported by blazer owners.
Theres a slight antifreeze smell i was just wandering if it a heater core problem and i have to replace it or try to get it flushed if it could be clogged.
Mount the unit using its bolts.
Install the replacement heater core downward from the windshield.
If this is what happened you should be able to look under the dash above and to the right of the gas pedal and you will see two vaccuum accuators one of them you should be able to wiggle around the linkage if it is broke.
When this freezes and you change your heater settings it breaks the shaft for the blend door.
Reattach the return and intake hoses.
These trucks have a problem where moisture builds up in the heater box then freezes.
The chevrolet blazer uses a coolant heated radiator core mounted in the dashboard to provide heated air into the passenger compartment.
While there are a variety of reasons your chevrolet blazer heater is not working the most common 3 are a broken heater blower motor a problem with the thermostat or a failed heater blower motor resistor.
My 1998 s10 blazer is having a heater problem it blows out heat but not sufficiently enought the blower motor is pushing out the air its just not heating up as it should.
The worst complaints are electrical ac heater and engine problems.