1999 Pont Grand Prix dual heater system


Old 11-16-08, 06:33 PM
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1999 Pont Grand Prix dual heater system

Need help. Have heat on drivers side but just cold air on
passenger side no matter where the control is set on passenger side. Have replace blower motor, flushed rad.
Removed dual heater control box and pluged in another
control box that worked but would not work in this car.
same problem. Heat on Drivers side Cold on passengers side.
Old 11-16-08, 07:09 PM
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There must be a seperate blend door for the dual heat. This blend door actuator is behind the dash attached to the airbox. Most vehicles require the complete removal of the dash.

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