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I have a 1995 gmc 1500 I have no heat air blows cold all the time I replaced the control and actuator in the dash

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  • 373 Answers

Have you checked your antifreeze? If it's low, it could cause this, as could a sticking thermostat, or a blocked heater core.That is where I would start

Posted on Jan 03, 2013

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Posted on Jan 02, 2017

honeymokey
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SOURCE: air blend door

Replace the broken actuator.

Posted on Apr 15, 2009

  • 16 Answers

SOURCE: No air blowing from the dash vents

sounds like you have a vacuum problem

Posted on May 04, 2009

  • 1 Answer

SOURCE: Air conditioner blows hot air after 30 seconds on

I have had this problem. I am not a mechanic...so to correct the issue temporarily, I simply turn off the car and restart. This has worked everytime for me. In extreme cases, I think you can also remove the AC fuse and start the car, which will also reset the computer. I also think that by taking the climate control off the "AUTO" setting has worked in the past.

Posted on Oct 27, 2009

  • 172 Answers

SOURCE: 2005 GMC Sierra 1500 - heater blows, but only cold air

Check coolant level. Check for heat at the heater hose going from water pump to heater core at firewall. Check to see that cable is moving coolant control valve from the closed to open position. Low mileage so it shouldn't be plugged heater core.

Posted on Jan 07, 2010

Testimonial: "You were absolutely correct. Low coolant level. Put in some 50/50 and we're nice and toasty now, but need to find out why coolant was so low. Thanks."

c17hydro
  • 2984 Answers

SOURCE: location and removal of the air vent actuator

Removal & Installation

  1. Remove the floor air outlet duct extension from the floor duct.
  2. Remove the center console, if equipped.
  3. Remove the screws from the center console duct, if equipped.
  4. Remove the center console duct, if equipped.
  5. Disconnect the electrical connection at the mode actuator.
  6. Remove the mode actuator mounting screws from the HVAC module.
  7. Remove the mode actuator as an assembly with the actuator cam.

98d9332.gif
Mode actuator location

To install:
  1. Install the mode actuator as an assembly with the actuator cam.
  2. Line up the heater/defroster valve lever with the mode actuator cam slot.
  3. Line up the A/C valve lever with the mode actuator cam.
  4. Install the mode actuator mounting screw to the HVAC module and tighten to 14 inch lbs. (1.6 Nm).
  5. Connect the electrical connection at the mode actuator.
  6. Install the center console duct, if equipped.
  7. Install the screws to the center console duct, if equipped, and tighten to 14 inch lbs. (1.6 Nm).
  8. Install the center console, if equipped.
  9. Install the floor air outlet duct extension to the floor air duct.
  10. Calibrate the HVAC module actuators.

Posted on Apr 18, 2010

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1 Answer

My heater don't work in my 1999 GMC Yukon all it dose it blow cold air


Blend Door Actuator Replacement 1999-2007 Chevrolet ...

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I just don't get why that doesn't work right in the first place. ... I have 99 Yukon that has a problem with the front air. .... $55,000 for my GMC, I guess expecting cold air when we push A/C and getting 90 degree blast ... 2001 Yukon XL 1500 Front heat & air fine, rear ac blows hot as if heater is on in all settings. More results from forums.edmunds.com

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Heater blows only cold air


Air Temperature Control Blend Door Failure No Heat or no AC (dependes on where door sticks)

In all modern cars there is a tiny DC electric motor driven gear drive that moves a plastic door that blends heated and cooled air from the AC and the heater core, this is called (interestedly enough) the air temperature control blend door actuator. The motor that moves this door fails because the door starts sticking from warping, most common complaint is no heat but it can be no AC as well. To replace these parts (blend door and blend door actuator) you must remove the entire dash from the car. Always have this problem confirmed by a dealer or qualified repair shop as it is a very expensive repair.

Other causes of no heat in the cabin are engine thermostats that are stuck open (engine runs cold) or air bubbles in the cooling system.

Dec 27, 2012 | 1999 GMC Sierra

1 Answer

1995 GMC pickup. Cold AC will blow through all settings (defrost, front vents and flloor) but warm air will not come out the defrost. You can hear something click in the dash that you assume is some kind...


good work, the clicking noise you hear is the blend door trying to move. this door is what controls the temp. the most common reason is the actuator motor is bad but sometimes the door hinge breaks, this hinge slides into actuator and is used to move the door. you will need to locate it on the heater box by locating the noise and then remove the actuator and see if the hinge is broken, i will try to enclose some picture to help you. good day, hope this helps.johnjohn2_142.jpgjohnjohn2_160.gif

Sep 24, 2011 | 1995 GMC Sierra C1500

1 Answer

2005 GMC blows only cold air on drivers side


Sometimes the blend air door actuators get stuck. You can usually free them by "cycling" the temperature control. For instance, If you have the control on HOT but you are getting cold air, turn the control to COLD and wait about one minute, then turn it back HOT. If this does not work, then you probably have a bad actuator on that side.

Fortunately, the driver's side actuator is pretty easy to replace. Just look up under the dash on the driver's side. The actuator is attached to the bottom of the air box. You will have to remove the lower trim pnels to see it. (See #9 in the Picture)


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Aug 22, 2011 | 2005 GMC Sierra 1500 Hybrid

1 Answer

A/c blows cold on passenger side, hot on drivers side


To correct this problem u will need to replace the air temperature control blend door and the electric blend door actuator inside the dash, contact your local dealer for parts, they are dealer only parts

Sep 26, 2010 | 2000 GMC New Sierra 1500

1 Answer

1995 Xj cherokee 4.00L airconditioning comes on with heater fan


It sounds like you blend door is broken. It is about an 8 hour job to tear the dash apart and replace the actuators that control blending of hot and cold air under your dash.

Jul 14, 2010 | 1996 Jeep Grand Cherokee

1 Answer

A/C not blowing thru vents just defroster and floor


It is a vent door actuator motor on top of the blower box,the dash has to be removed and set in the seats to replace the actuator motor.Cost for the part is about 50.00 dollars

May 23, 2010 | 2002 GMC Yukon XL

2 Answers

2004 gmc 1500 heat is only blowing on passenger side. driver side is blowing cold air.


sounds like you have dual zone climate control in your truck. Most likely the actuator that controls the temp door in the HVAC box

Nov 22, 2009 | 2004 GMC Sierra

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2003 DODGE RAM 1500 HEAT BLOWS DEFROST OR DASK


there is a directional door actuator motor,that has gone bad.

Nov 19, 2009 | 2001 Dodge Ram 1500 Truck 2WD

1 Answer

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Replace the broken actuator.

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