why does my car still not blow hot air?

55

Asked by Mar 23, 2013 at 07:22 PM about the 2006 Pontiac Grand Prix GT

Question type: Maintenance & Repair

changed my thermostat AN COOLENT, let run till running tempture was reached, still no hot air ...i can hear the the thing under the dash opening an closeing ,what can i do ??

1 Answer

102,855

There's a core bypass door that has to close. When it's open, air does not go through the core. It is controlled by the temperature switch.

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