2006 Pontiac grand prix where is the blend door actuator mode at

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The Heater Blend Doors have become detached or the motor drive failed. They open and close and direct the air to vents as well as cutting it off altogether and divert to heat or A/C.

https://www.google.com/search?q=Pontiac+Grand+Prix+Heater+Blend+Doors

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How To Install Replace AC Heater Temperature Actuator ...

? 4:40
https://www.youtube.com/watch?v=mVP09M7hLB4
Jul 21, 2014 - Uploaded by 1A Auto Parts
http://www.1aauto.com/temperature-blend-door-actuator/i/1ahcx00293 ... How To Remove Install Door Chevy Monte Carlo Pontiac Grand Prix ...

GM Blend Door Actuator Repair (Saturn, Chevy, GMC, Buick ...

? 4:28
https://www.youtube.com/watch?v=fER3ZqnYLZg
Jul 11, 2014 - Uploaded by willmacneill
The procedure is the same for most GM blend door actuatorsfrom 1990-2013 (found in many vehicles made by Chevy, GMC, Buick, Pontiac, ...

Mode/Temperature Door Actuators May Fail : Pontiac ...

The blend door is probably what is keeping the air from blowing across the heater core and picking up the heat. I hope your manual gives a description and procedure for it.

The blend door actuator and other heater case doors will be either vacuum operated with a few canister diaphragms situated around the heater case, or they may be operated with electric motors. If you pull off the lower sound insulator panels below the dash, you can see the bottom of the heater case, and then find the actuator for the blend door. If vacuum operated, check for vacuum. The vacuum for the heater/AC controls comes from a single line from the engine, through the firewall, and into the back of the control head or to a control module. Then, many vacuum lines branch out from this central point to the canisters- the heater/AC controls will direct vacuum to appropriate actuators, or servos.

most likely blend door actuator is stuck on cold needs replaced.. make sure coolant is full or u wont get heat

blend door actuator failing and sticking on cold setting

You must remove the dash from the car to access the door and the actuator.

Did you check the blend air door actuator for BOTH sides or just one? The only things that can cause the symptoms you are descibing is a blend air door actuator that is not working or a broken blend air door.

Although there are several things that can cause the actuator to not work, it is usually caused by a failure in the actuator itself.

If you can actually see the actuator moving when you change the temperature setting, then the door itself is broken....pretty "cut-and-dry".

ether the blend door actuator is bad or the climate control module is failing. most likely the blend door actuator. would have to pull most of the under dash out to get to it to replace it. not fun at all.

Problem with the blend door actuator or wiring going to it (no separate fuse). Most of the time the actuator motor fails and won't close the blend door. I can't guarantee that it isn't a broken wire going to the actuator. It should set a trouble code in the BCM (body control computer) if its electrical because it looks for a feedback as to where the door is positioned.

You would need to buy a factory service manual for that blend door diagram. Try eBay for a used manual set.