98 Chevy Blazer Heater Core Problems

Take out the mounting bolts attaching the heater core to the interior firewall.

98 chevy blazer heater core problems.

Maneuver the old unit upward and outward toward the windshield. 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. The 1998 chevrolet blazer has 1085 problems defects reported by blazer owners.

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. Disconnect the electrical wiring harness. This heater core can become clogged and leak as it is usually the lowest point in the coolant system and debris settles into it. The worst complaints are electrical ac heater and engine problems.

The chevrolet blazer uses a coolant heated radiator core mounted in the dashboard to provide heated air into the passenger compartment. When this freezes and you change your heater settings it breaks the shaft for the blend door. Reattach the return and intake hoses. 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.