2004 Pontiac Grand Prix Heater/defroster

2004 PONTIAC GRAND PRIX
80,000 MILES • 6 CYL • FWD • AUTOMATIC
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ARCTICMAN1982
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  • 1 POST
2004 Pontiac Grand Prix GT, When the dash vents are turned on, they will eventually blow heat, but it takes about 25-30 min. However when I turn the knob to defrost (after heat has started coming out) the air goes ice cold from the defroster vent and won't clear my windows. What do I need to fix? I have already replaced the thermostat.
Oct 4, 2010 at 11:57 PM
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CRZYDRVR
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  • 432 POSTS
Kinda sounds like the blend door actuator. This is a motor that moves the blend door ( controls from hot to cold in the heater box) you may want to have it taken into a reputable repair shop to have it properly diagnosed.
Oct 6, 2010 at 3:45 PM
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