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The problem is most likely a broken blend door. This problem is very common on this model and that's always a pretty good guess. There is an aftermarket fix for the problem or have the dealer diagnose and fix it for close to $1k.

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14y ago
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14y ago

Typically the fuse is blown out. If you can access the radio, unplug it from the harness, use a 12 tester and test the leads. If you have power coming through displayed on your tester, it may be something inside the radio. Erik

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12y ago

The most common problem with heat on these cars is a broken blend door. The dealership will want a fortune to repair it but there is a do it yourself alternative kit out there for a very reasonable cost. please see my profile for full info! We offer 100% satisfaction and have been helping people solve they're heater and AC problems for 8 years!

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16y ago

could be a clogged heater core or problem with blower fan or clogged air ducts antifreeze system could be low or frozen Is engine getting warm?

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16y ago

Low coolant? Bad thermostat? Heater core plugged,restricted, or air bound? Water pump not circulating coolant? Heater control cable not adjusted properly?

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15y ago

If the heater does not work, check: -heater fuses and/or any heater relays -heater control head -heater blower motor resistor

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15y ago

Assuming the blower is working, the reason for no heat could be, low on coolant due to leak in coolant system, thermostat stuck open, heater core plugged or temperature blend control NG.

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Q: 1998 Chevy blazer radio wont work?
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