How To Install Replace Air Temperature Control Silverado Suburban Sierra 99-06 1AAuto.com




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Daryl Jones: I have a 04 Chevy Silverado 1500 with a dual temp gauge. My passenger side vents will only blow hot air w/a/c on or off. I was reviewing your comments but wanted to verify that this issue was the temp actuator/ same as this video, correct? If not nay ideas on what it could be? Thanks in advance.

Christopher Harmel: Excellent! Thanks for your help!

Steve Elder: Great video...boy I love youtube and its great when people share what they know..thanks so much...I have an 04 Silverado Regular cab with 2 sliding (up and down) controls..one for the passenger side and one for the drivers side ( thus the dual zone)...if they are both in the cool position..sometimes the air will blow real cold then then if I even attempt to slide one of the controls to a warmer position, then hot air blows out of one and warm air blows out the other..will this fix you just recorded fix this problem? Thanks in advance for your answer

jason montano: This is the one that controls the vents correct? Where is the one that controls from heat to cool?

Mike Oakleaf: Hey guys thanks for the vidio, i have no heat or very litle i just today replaced the thermostat on my 1989 chevy C1500 still no heat i did check the actuator and it is moveing very well it moves like fore inches when i blend from floor to defrost. im not sure but i dont think the problem is the actuator, maybe im wrong but please help with my problem?

Jimmy Holt: Thank you so much for posting such video's. a great help for those of us unable to afford a genuine repair manual.

Brian Harvard: I have a 99 Yukon Denali. Same fix?

ENRIQUE PACHECO: Hi,I have a 2006 Cadillac SRX that has a clicking sound everytime I select the air to blow to the feet or the A/C is OFF and goes away when blows to the face.Could it be the actuator?

1A Auto Parts: You may also want to check under the dash and also under the hood to see if there are any broken vacuum lines that may also be causing the issue.

tysonpeter: i have an 05' silverado and no hot air comes from the vents, it used to take a long time to cut in but now doesnt cut in at all... if i replace the actuator like in this video would it fix the problem?? if so about how much does one of these cost? thanks

freightliner o: can you show a video on how to do the one for the drivers side where you remove the instrument panel to get at it. since its the upper one

A.J. Hall: Is this witht eh digital controls only? my 2002 silverados heat only works sometimes. Its either kinda warm or really hot like normal. I tried replacing the thermostat and filled the coolant resivor. I was thinking either heater core is part clogged(wouldn't explain intermittent heat though) or the air duct door isnt switching all the way from cold to hot. I can switch it back and fourth from hot to cold and it changes it just doesn't get really hot.

1A Auto Parts: If you have lost some of the speed settings on the heat, that usually happens when a blower motor resistor goes bad. Hope this helps you out. 1aauto.com 888-844-3393

1A Auto Parts: It could be, if the system runs on vacuum, you may want to check the vacuum lines for a leak to see if that's causing it.

1A Auto Parts: There are several different actuators on the HVAC house. There is one for the temp and then one for the vents. On some vehicles there are ones for the each side you would have a set of 4 altogether in that case.

Steve Clark: I did this repair and it worked great. Thanks !. My 99 Silverado was only blowing cold air when I turned the temp dial to hot. Just a side note to check and see if it was actually the actuator that was broken I did this.. When the old actuator was off, I turned the truck on , turned the temp dial to hot, then manually turned the shaft that the actuator is connected to and the heat worked.

Jim Oltman: Thanks for the advice. You don't happen to have a video "How To" on that do you? :-) I've found some other videos showing how to do that, so I'll give it a shot. Thanks!

1A Auto Parts: That is correct that connection plugs into the resistor. You will have to cut and splice the connection into the existing wiring.

1A Auto Parts: You might want to try some of the Silverado truck forums for a reset procedure. They are normally the best source for that type of DIY info.

1A Auto Parts: @boobies1989 It may be the blower motor resistor that could be acting up on you. You may want to check it to see if it's working correctly. Hope this helps.

1A Auto Parts: At the current moment I do not. We'll keep this in mind during any future repairs where we may need to make this repair.

Mike Murray: Thanks for the response. This make s sense.Do you know the procedure to do a vehicle reset for my Chevy 2004 HD Silverado Ext cab pick up. Thanks

1A Auto Parts: We currently do not have a video that shows that bparticular repair.

1A Auto Parts: It could be the same issue as the one shown in this video. 1aauto.com 888-844-3393

1A Auto Parts: It may be in the same location, you could start by following the video first to see if GM put it in the same location on your Yukon.

1A Auto Parts: Hi Jim, You may want to make sure that there aren't any air pockets in the system, or for the heck of it flush the heater core out with a garden hose. Remove the two radiator hoses in the engine compartment and work the hose back and forth between the two outlets. There may be some debris clogging up the fins in the core.

Tom Lloyd: My suburban only blows heated air when the gauge is turned all the way to the right. It seems like replacing this part would fix that issue. Do you agree?

Sharkbait0816: If I were to want to add a rear defrost window, to my Silverado. Would I have to get a new unit, such as this in order to control the rear defrost and mirror defrost from the heater control unit. If not, I have heard that I may have to get the control unit reprogrammed by the dealer before adding such units to my vehicle. Would I have to do so is my question?

JOE CLAYTON: I have a 2004 Silverado. It has dual climate control for both driver and passenger. The driver side works fine. But no matter what the passenger side is set at all it does is blow hot air on the passenger side. Would this be the air temperature actuator or the control switch itself?

Urbino Ruiz: hello, i have a 99 Silverado, the compressor works fine and there is freon in the system. but it only blows hot hot air every time. now when i turn on the ac i here a loud boom noise from where the actuator is located, could that be the problem for why it does not blow cold air also

1A Auto Parts: Some vehicles have a reset procedure when you remove the battery to bring back certain features in the vehicles (mirrors, abs, air bag light, ignition switch). This could be a case where you need to do a vehicle reset to get it to work correctly.

1A Auto Parts: Its possible but you would need the auto A/C housing as well as all of the wiring to go along with it. It is something that is extremely extensive and not worth it overall.

jenkx2469: My 05 silverado blows cold air on the driver side and heat on the passenger side when the heat is on. I replaced the blend door above the accelerator but it didn't change anything. Would changing this blend door help?

1A Auto Parts: You could test the power going to the actuator with a test light or an ohm meter to see if there's power going to it. If there is, then it might be a bad actuator. Hope this helps you out. 1aauto.com 888-844-3393

Chris Marino: Would this also be if the air only blows out of the defrost vents?

1A Auto Parts: You may want to try to pinpoint where that noise is coming from so that you can see if it's causing the issue. 1aauto.com 888-844-3393

robert f: does this work for 2005 suburban?

1A Auto Parts: It could be, you may want to take a look at it to see if it's working right.

1A Auto Parts: You have an issue with the vent door actuator or the door. You will want to go into the glove box area and check and see exactly what the issue is by taking off the actuator and see if the door is operating correctly.

Highly Cool: I have a 2005 Suburban LT with dual climate control. The drivers side will periodically blow hot air, then go cold again. Would the actuator on the drivers side be bad or could it possibly be a door that is sticking?

staaberelli: I changed the actuator and the filters in my 01 Silverado and the air does not blow from the vents and is stuck on the Defrost position. I am thinkingit might now be a bad switch? Any thoughts are there any more actuators or mode doors. I know the door for this actuator changes.

craig espy: Is there a video of replacing the actuator on the driver's side of '06 Sierra (dual climate control)? Any help is appreciated.

1A Auto Parts: If the vehicle didn't come from the factory with one, then you would need to add all of the factory components to make it work. 1aauto.com 888-844-3393

1A Auto Parts: You may want to check the door actuator to see if it moves at all when the lever is moved.

1A Auto Parts: It should be the same procedure.

pleahelp: Awesome video man, thanks.

1A Auto Parts: HI Lisa, Usually you need to cut the old one off and solder or butt connect the new wires together. Hope this helps you out. 1aauto.com 888-844-3393

Sven b: another great video, THANK YOU.

1A Auto Parts: It could be a bad actuator, or if the system also runs on vacuum, you may have a vacuum line under the dash or in the engine compartment that it broke or has become disconnected. Check along the firewall too, in the engine bay. Hope this helps you out. 1aauto.com 888-844-3393

uwannabananababy: @ Joe Clayton, changes are the same actuator is bad, different location.

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