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You have e a 2002 Pontiac Grand Am that blows only hot air at all speeds you have changed the control module in the front and no luck Is there some other reason why it would blow hot only Diagrams?
Wiki User
∙ 16y ago
I don't know what module you changed but it has nothing to do with the AC as far as I know.
Does the compressor run?
If it is running and you are getting no air the mix door in the heater may be stuck in the heat position, or the system may be low on r134.
If the compressor does not run you may also be low on r134 but the clutch may be bad, the compressor may also be bad, also check the AC switch as it may be bad.
Wiki User
∙ 16y ago
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