Question about 1994 Pontiac Grand Am

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Grand am heater works ok but wont defrost

I own a 1995 Pontiac Grand Am. The radiator cracked and I had to have a new radiator installed, yesterday, 31Dec08. With the new radiator, the heater works okay, but I cannot direct the heater airflow with the right heater control knob. The heater only projects an airflow through the instrument panel outlets. When I put the dial to defrost, no air comes out of the defroster vents, the airflow continues to come out of the instrumet panel outlets only. It is as if the control knob only operates in the "vent" mode, no matter where I position the dial.

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  • awayne123 Jan 03, 2009

    Thanks, but I ended taking my car in for service. The tech told me that there was a mechanical "door" which allowed the air flow to be transferred from the dash, to the defrost vents, and that this door had siezed up. Because of the age of the car, no local dealers had the part in stock. They could try to send away to another state for the part, but they said it would take at least 4 hours of labor to replace the part. I decided against the expense and bought a portable defroster from WalMart for $15. Krusher, thanks for your ideas.

  • awayne123 Jan 03, 2009

    Thanks, but I ended taking my car in for service. The tech told me that there was a mechanical "door" which allowed the air flow to be transferred from the dash, to the defrost vents, and that this door had siezed up. Because of the age of the car, no local dealers had the part in stock. They could try to send away to another state for the part, but they said it would take at least 4 hours of labor to replace the part. I decided against the expense and bought a portable defroster from WalMart for $15. Krusher, thanks for your ideas.

  • awayne123 Jan 03, 2009

    Thanks, but I ended taking my car in for service. The tech told me that there was a mechanical "door" which allowed the air flow to be transferred from the dash, to the defrost vents, and that this door had siezed up. Because of the age of the car, no local dealers had the part in stock. They could try to send away to another state for the part, but they said it would take at least 4 hours of labor to replace the part. I decided against the expense and bought a portable defroster from WalMart for $15. Krusher, thanks for your ideas.

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  • 83 Answers

Check cable behind dials rod most likely off on that dial.

Posted on Jan 03, 2009

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