2003 Chevy Blazer

My windows are constantly fogging up. My heater and AC both work. This has been going on for a while but seems to be getting worse. Could it be the heater core?

1 thought on “2003 Chevy Blazer”

  1. Yes, it could be the heater core. Check your coolant level and if it is low, then this would be a good indicator. If the coolant level is not low, then you may just have a clogged drain.

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