98 Chevy Blazer Heater Core Problems

Install the replacement heater core downward from the windshield.

98 chevy blazer heater core problems.

This heater core can become clogged and leak as it is usually the lowest point in the coolant system and debris settles into it. Take out the mounting bolts attaching the heater core to the interior firewall. Mount the unit using its bolts. The chevrolet blazer uses a coolant heated radiator core mounted in the dashboard to provide heated air into the passenger compartment.

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. 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. These trucks have a problem where moisture builds up in the heater box then freezes. Disconnect the electrical wiring harness.

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