Mechanics

AUTOMATIC DUAL A/C AND HEATER CONTROLS

Pontiac Other

I have a 1999 Gran Prix GT that blows hot air on the driver side only no matter what you set the temperatur at, the passenger side works fine. What could be the problem?
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Chumel
April 13, 2007.




Sounds like you have a blend door operation problem under the dash in the HVAC plenum.

Tiny
Jack42
Apr 24, 2007.


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