A/C and heater only works on passenger or drivers side?

Welcome back. It sounds more like one of the temperature sensors for that side has an issue. There are two per side, one in the upper duct and the other in the lower. The best way to determine where and what is the issue would be to put a dealer level scan tool on the truck and see if there are any error codes in the HVAC system. Then hope it isn't a failed upper sensor. To replace those the instrument panel is removed so you can get to the sensor mounted in the duct.

Bad actuator drivers side on top try to do it myself dissemble dash or have a shop do it $370.00 and I buy the part.

The lower ones are easy. need instructions how to replace upper.

Well the easy way uses a saws-all but it's a bit extreme.. Did it say which actuator or give you the part number, there are two on top, one is the mode actuator the other is the temperature door for the passenger side. The mode control can be changed without removing the dash, you remove the HVAC duct over the drivers foot-well and reach up in to remove the two screws from the actuator. It's also possible that the problem is the actuator cams that it moves, that could explain why it works in manual mode. The cams are plastic and have been known to fall off they are under the actuator on a plastic bracket.

Can you see the cam links behind it? They have a bad habit of coming free. The only other items on top of the HVAC case are the temperature control for the passenger side (pic1). But if the AC works on that side then it should be working. The other item is the air inlet actuator, it controls the door for re-circulation or exterior air (pic2). The temperature control actuator for the drivers side is on the bottom of the unit in the passenger footwell (pic3).

thank you the problem is fixed.

Driver side ac lukewarm not cold like passenger side actuator problem? Or something else?

Welcome to 2CarPros.

If you have dual climate control, it sounds like the blend air door actuator isn't working. The actuator is located under the dash on the HVAC system.

Here is a link that explains in general how to replace one:

https://www.2carpros.com/articles/replace-blend-door-motor

What I suggest is to confirm that the actuator isn't operating and replace it if it isn't.

Let me know if I can help. If you need specifics, let me know if the system is an automatic or manual climate control.

Take care,
Joe

The one under the dash on the passenger side controls the passenger side drivers side isn't working.

Welcome back:

According to Alldata, with automatic climate control, the left side actuator is located just to the left of the glove box. The directions provide are in pics 2 and 3. In pic 1, I highlighted what I am seeing.

________________________________

The last thing in in pic 3 indicates calibration. I looked up the process for you and found this for doing it without a scanner.

Alternate Method (without Scan Tool)

Note: Do not adjust any controls on the HVAC control module while the HVAC control module is self-calibrating. If interrupted, improper HVAC performance will result.

1. Clear all DTCs.

2. Place the ignition switch to the OFF position.

3. Install the HVAC actuator.

4. Connect all previously disconnected components.

5. Remove the HVAC control module fuse for a minimum of 10 s.

6. Install the HVAC control module fuse.

7. Start the vehicle.

8. Wait 40 s for the HVAC control module to self-calibrate.

9. Operate system and verify that no DTCs have set as current DTCs.

________________________

Let me know if this helps or if you have other questions.

Take care,
Joe

Driver side A/C not as cold as passenger side. intermittent problem sometimes it works more less.

Good evening,

I attached a picture of the actuator and the procedure for you to follow with diagrams below .

https://www.2carpros.com/articles/replace-blend-door-motor

Check out the diagrams (Below). Please let us know what happens.

How do I know which actuator to replace there are four of them? A/C not as cold on drivers side or is the climate control going bad?

Welcome to 2CarPros.

I attached directions for replacement of the actuator specific to the left side. The attached pictures correlate with the directions. First, here is a link that explains the process in general:

https://www.2carpros.com/articles/replace-blend-door-motor

Here are the specifics:

TEMPERATURE VALVE ACTUATOR REPLACEMENT - LEFT SIDE (CJ2)
Temperature Valve Actuator Replacement - Left Side (CJ2)


pic 1



pic 2

Let me know if this helps.

Take care,
Joe

Does a code reader pinpoint actuator problems?

Welcome back:

If you have a scanner that can read HVAC codes, it should point you in the right direction. As you mentioned, there are several. One is for fresh air / recirculate, one is a mode actuator which directs the air flow direction, and then two for temperature, one for each side.

Joe

This truck is the 1500 model. After replacement of a drained battery, the driver side AC circulates between warm, cool, and cold approximately every ninety seconds while the passenger side works properly. Based upon research, it seems that this is a common issue and that a fix may be to. 1) initiate a re-calibration using a scan tool. 2) perform some steps that require removing a fuse, adjusting the temperature, shutting the truck off, etc. I have done each of the recommended procedures, however I am still experiencing the same issue. We also tested the A/C unit for leaks by draining the Freon, measuring the capacity, then replacing it back into the system. The Freon level was at proper lbs therefore proving no leaks in the AC system. Any idea's of what may need to be replaced to resolved this issue or other steps to try to rectify the issue?

Okay, there are four actuators. the one you need is on top of the heater case. I attached a picture for you to view. To access it you need to remove the passenger side airbag. it will be visible when that is removed. Make sure you disconnect the battery before this repair.

Roy

Hello Roy,
Thanks again. I am assuming that this will require the removal of the dash, correct?
If so, without having to purchase Chilton or Haynes manual, and references that you may know of that will walk me through step by step on how to accomplish this task?

Thanks,
Gary

The drivers side is an easy replacement. I sent you the procedure for the passenger side. Sorry about that.

Nothing to remove but the cover under the left side of the dash. That is held by a couple of screws. the blend door actuator is right there. the correct picture attached.

Roy

Hello Roy,
Just for clarification I have two questions.

1) The video link here from 2carpros does not apply to me as it looks like that this is for the passenger side, correct? https://m.youtube.com/watch?v=tY6M92fA2ug

2) The image you attached, you said that that is for the left side (driver side) correct? This additional link from 2carpros, shows that the image is the right side. Can you confirm/deny? https://www.2carpros.com/articles/replace-blend-door-motor

Thank again for your assistance.
Gary

1. Does not apply to you.

2. Correct that is for the right side, not the left.

You are welcome.

Roy

Hello Roy,
Wondering if this is correct? If so, I will order it and once i get results report my update.
https://www.1aauto.com/door-actuator/i/1ahcx00042?f=1079628&y=2011

After I get it in, do I need to perform a re-calibration? If so, in the steps that you provided way up top, I do not have a HVAC/ECAS fuse. See attached.

Thanks a million again,
Gary

Yes, the calibration.

Fuse 39 as marked AC.

Roy

My truck's passenger side heat has gone out and is stuck on cold. It does not matter if you change the vent selected. It is a digital HVAC controller with independent driver/passenger temperature settings. I have tried the fuse trick and it only worked for a few days. I think I need to replace a blend door but are there multiple doors? What is my fix here?

Hello,

It does sounds like you have a right side temperature blend door actuator that has gone out.

Here is a video and guide to help you get the job done:

https://youtu.be/tY6M92fA2ug

and

https://www.2carpros.com/articles/replace-blend-door-motor

The one one want to change is the bottom (easy) one. You are so lucky!

Let us know what happens and please upload pictures or videos of the problem.

Cheers, Ken

Thanks for the help Ken, I appreciate it! So I just need to replace the one blend door behind the kick panel and I should be good?

Yes, should be good to go. Please let me know.

no heat on passenger side automatic control and air blows cold on passenger on each setting but is working on drivers side.

try pulling HVAC fuse first it resets them and may work then. if not these are a pain to replace as air bag has to be removed for access so that means the system has to be charged down in order to remove the air bag

The A/C temperature on the driver side does not go cold when adjusting the temperature in the dash. I can turn the temperature up and it will get hotter but it stops at warm instead of going cold. The passenger side will adjust up and down with no problem from hot to cold air. All mode doors work when switching from defrost to center to feet. I’m assuming it’s the drivers side actuator that is bad but I don’t have any clue where it’s location is. Any help would be great.

Hi,

It will be located under the dash on the HVAC box. It's actually easy to replace.

To get you started, here is a link that shows in general how it is done. You can use this to help guide you.

https://www.2carpros.com/articles/replace-blend-door-motor

If you look at the picture attached below, it shows the directions/picture specific to your vehicle for replacement.

I hope this helps. Let me know if you have other questions.

Take care,

Joe

See pic below.

Thank you very much. Is there going to be one for passenger and one for driver? I’ve read that there is another one near the gas pedal that is for the drivers side.

Hi,

Yes, there is one for the right side as well. It is more difficult to replace. I attached the directions below for replacing it. (pic 1)

Also, pic 2 shows the recalibration procedure when you replace it. I forgot to add it the first time. Note: The recalibration shows doing it with a scan tool and without the scanner.

I hope this helps. Let me know if you have other questions.

Take care,

Joe

See pics below.

The air conditioner in my truck 2500 Crew Cab Duramax Diesel started blowing hot air from the passenger side vents while blowing cold from the driver side while I had the air conditioner on. I tried changing the functions to defrost and other vent positions but it continued. After turning the A/C off for some time it worked correct when I used it again. This has repeated a few times in the last week.

Today I drove to the snow and turned on the heater (with no A/C) and the passenger side was blowing ice cold but the drivers side was blowing hot air. Again I tried various vent functions and the air flow remained the same, hot on drivers side, cold on passengers.

Air force seems to be fine, the car just cannot get the temperature correct. It seems to have a mind of its own.

The vehicle is no longer under warrantee and funds are tight. I would love to fix this myself but if I have to take it to a mechanic I would like to have an idea what to expect in order to "keep the mechanic honest".

Hoping you can help, Robert

Hey Rstella2010,

This is a classic blend door actuator problem which you can fix easily. Here is a guide that will show you which one to change and how to replace it:

https://www.2carpros.com/articles/replace-blend-door-motor

Please let us know happens so it will help others.

Best, Ken

Blows hot air on drivers side and cooled air on passage side.

Good morning,

Are you in heat mode or AC mode?

There are blend door actuators that control heat/cool functions and need to know what you are commanding.

https://www.2carpros.com/articles/replace-blend-door-motor

I assume dual controls?

The left door is under the dash by the center. you need to remove the console if you have one.

The right door is on top of the heater case. the entire dash has to be removed to access this one.

Roy

My air conditioner blows hot on the drivers side sometimes. what is the part number i need for the actuator? wheres is its location?

It is in front of the console and the console will have to be removed if it has one.