I just got a 90 silverado, and my heat and ac work fine but only out the front vents,the defrost doesnt work neither does the floor.When i push for the ...

tkelley · by **tkelley** [OP] » Aug 08 2011, 7:01pm

I just got a 90 silverado, and my heat and ac work fine but only out the front vents,the defrost doesnt work neither does the floor.When i push for the direction for the heat to go to the floor or windshield it just keeps going to the top and then when i hit the button for it to go down it goes all the way without stopping.Anyone know what that could be?

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EKinMN · by **EKinMN** » Aug 13 2011, 2:32pm

Check this:
Heater blend door actuator

I just got a 90 silverado, and my heat and ac work fine but only out the front vents,the defrost doesnt work neither does the floor.When i push for the ...

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