Question about 2006 Pontiac Grand Prix

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I have to turn my heat and air conditioner knob up on5 to feel any heat or air is it the blower or selector knob 03 chevy avalanche

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  • Pontiac Master
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  • If the fan does not work at all on the lower speeds than the most likely problem is a bad blower motor resistor.

  • I can give you some pointers on checking if you need it.

Posted on May 25, 2011

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1 Answer

My 2007 chevy avalache wont blow heat or air what could be the problem?


The Blower motor could be bad. Up under the dash on the passenger side. Probably under a cover of some kind. You can try hitting it (lightly) with your hand.

Aug 17, 2014 | 2007 Chevrolet Avalanche LTZ

1 Answer

When i turn on my heater on 2003 grand am no air is blowing through vents but i can feel warm air. when i turn knobs to higher levels no heat is blowing through vents.


The blower motor is under the dash on the passenger say. There may be a trim panel that needs to be removed in order to get at it. Once you can see the bottom of the blower motor start the car, turn the speed selector to high and tap the bottom of the blower motor with a large screwdriver handle. If it starts working replace it. If it still doesn't work check out the link to the how to tip below.

http://www.fixya.com/cars/r6571076-blower_motor_not_work

Jan 20, 2011 | Pontiac Grand Am Cars & Trucks

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2004 chevrolet avalanche A/C not staying cold, after a while goes warm


2004 chevy Avalanches air conditioner blows hot air, can the actuator be forced to keep it blowing cold air instead of hot air all the time.

Jul 20, 2010 | 2004 Chevrolet Avalanche

1 Answer

I have the same problem with my windstar blower is fine but is coming cold air but no heat i dont know what to do can any one show me how to fix it thnx


First, feel the heater hoses going into the firewall under the hood. If they are hot, then you have hot engine coolant going into the heater core. If they are not hot, then you either have a bad thermostat or you are very low on engine coolant.

Next you need air flowing through the heater core so it can come out heated through your vents. If the iar is flowing somewhere else, your temp blend door is not moving because the bend door motor is bad or your temp knob on your heater controls is bad. The blend door motor is an electric motor.

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Air Flow Control
Air flow control is accomplished in the following manner:
  • Primary control is through the function selector knob , mounted on the heater function selector switch, which is part of the heater control .
  • The function selector knob has the following positions: OFF, PANEL, PANEL/FLOOR, FLOOR, FLOOR/DEFROST and DEFROST.
  • The heater function selector switch combines a vacuum selector valve with an internal electrical switch.
  • The vacuum selector valve directs source vacuum to various vacuum control motors (18A318) . Refer to the System Airflow Schematic and Vacuum Control Charts.
  • An internal single-pole electrical switch is also controlled by the selector. The switch controls the electrical supply to the heater blower motor switch (18578) .
  • The position of the function selector knob determines the manner in which the system will operate.
  • Each position of the function selector knob is detented for positive engagement.
Temperature Control
The temperature control operates in the following manner:
  • Temperature control of the heater system is determined by the position of the temperature control knob (between COOL-BLUE and WARM-RED) of the heater control .
  • This control knob is connected to a potentiometer mounted in the heater control . This potentiometer is electrically connected to the electric blend door actuator that operates the A/C air temperature control door.


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  • Movement of the control knob from COOL (Blue) to WARM (Red) causes a corresponding movement on the air temperature control door and determines the temperature that the system will maintain.
System uses a reheat method to provide conditioned air to the passenger compartment.
  • All airflow from the blower motor (18527) passes through the A/C evaporator housing .
  • Temperature is then regulated by reheating a portion of the air and blending it with the remaining cool air to the desired temperature.
  • Temperature blending is varied by the air temperature control door, which regulates the amount of air that flows through and/or around the heater core (18476) , where it is then mixed and distributed.
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inside you plenum box:

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Mar 03, 2009 | 1998 Ford Windstar

2 Answers

No heat of blower from defosters or heating ducts 2005 surburban


Its the Blower Motor. It is the Round thing right Under the Glove Box. Remove that Round cap and it is Right There.

Jan 15, 2009 | 1998 Chevrolet K1500

1 Answer

03 chevy tahoe


There are seperate blowers for the front and rear air. It is most likely either your blower motor or the resistor, both located under the passenger side dash. I got a blower from a salvage yard for $25, But ended up having to get the resister from the dealership for about $130. Hope this helps.

Dec 06, 2008 | 2003 Chevrolet Tahoe

1 Answer

No heat from Heater 2003 Lancer


check the heat selector is too tight, then look under the driver side on the right to check the white heat selector is jam. You can see a black cable connected to it. Turn the heat selecter knob and check see whether it move freely. good luck.

Oct 21, 2008 | 2003 Mitsubishi Lancer

1 Answer

Heat/ac


Hello,
You would be wise to check all the small rubber hoses under the hood as it would appear that you have a vacuum leak preventing the airflow door from moving to any other position. Look for cracked /cracking, split hoses or disconnected hoses and replace as necessary.

Good Luck!
Rich Lilja

Jun 04, 2008 | 1999 Ford Taurus

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