Is there a problem with my GMC dual climate control heater?

’04 GMC Dual Climate control heater issue | The largest community for snow plowing and ice management professionals. Find discussions on weather, plowing equipment and tips for growing your business. My 2004 2500HD with dual climate controls (manual) has an issue.

How to fix Chevy GMC Truck heater blend door?

1999 – 2004? Chevy GMC Truck Heater Blend Door Stuck Easy Fix How-to – YouTube If playback doesn’t begin shortly, try restarting your device. Videos you watch may be added to the TV’s watch history and influence TV recommendations. To avoid this, cancel and sign in to YouTube on your computer. An error occurred while retrieving sharing information.

How to fix a Chevy Silverado dual climate control problem?

An expert who has achieved level 1. An expert that has 1 follower. An expert that has over 10 points. An expert whose answer got voted for 2 times. Take battery cable off for 5 mins, then put battery cable back on.

Is there an issue with my dual climate controls?

My 2004 2500HD with dual climate controls (manual) has an issue. No matter where I put the slide selector, I get full hot heat. Yesterday was 70 degrees and obviously it was extremely noticable. I thought I had noticed something this winter but it was intermittent.

Why is my Chevy Silverado not mixing hot and cold air?

The passenger’s side flap for mixing hot & cold air according to driver commands is bad. Flaps are actuated by electrical step by step motors. Could be damaged the flap actuator (motor), the flap mechanism (blocked in “HOT” air position), and / or electrical supply wires.

How to test a Chevy Silverado HVAC system?

Plug in the electrical harness. Now set the fan and heater controls to off and the temperature controls to the coldest setting. Reconnect the battery, turn the key and listen for the actuator to click. Wait five minutes then test the controls to see if it worked.

Why does my Chevy Silverado blow hot air on one side?

This article applies to the Chevrolet Silverado (1999-Present). Does your Silverado blow hot air on one side and cold air on the other? If you have dual zone controls you may have run into this problem before. There is a way to fix this if you’re patient and willing to troubleshoot your way through it.

What’s the problem with my Chevy Silverado heater?

Fan is working, and some cool air seems to be sneaking thru, but it appears the vent actuators are not working. Have not been able to remedy the problem yet. I’ve changed the drivers side dual blend door actuator but the heat will intermittently blow hot to cold air. On the drivers side and the passenger side is completely fine.

Why does my Chevy Tahoe blow hot air?

This 2004 Chevrolet Tahoe came in with the complaint that the air on the driver’s side would change from cold to hot while driving down the road. When it shifted to hot the customer could not get it to turn back cold.

How to recalibrate the HVAC actuator in a GM Truck?

For manual systems it does not matter where the a/c controls are set but if you feel the need to do something, turn the blower switch on (I prefer speed 3) and set the temperature sliders about .5″ to .75″ from full cold. For auto systems, press the auto button, with the key on. Turn the ignition off.

How can I get the ggrrrr heater to work?

GGRRRR. Both zones worked independent of each other as they are supposed to. So I wiggle wires, bang on the heater box, disconnect the main DZ controls like 20 times and can’t get it to duplicate the condition again. Reinstall the glove box and the lower cover that covers the resistor area and turn it on.

How do I reset the climate control on my car?

Ignition off, pull the HVAC/ECAS fuse for 10 seconds, reinstall and start vehicle without touching any controls, wait 40 seconds for the control module to self calibrate. If there is still a problem, the actuator for the temp blend door may have failed. Scan the HVAC for codes. Re: Resetting Climate Control?

When did I replace the climate control on my dash?

Recently i had the climate control on the dash replaced, about 8 months ago. 2 days ago went to place the defroster on and vent/ air didnt come out the defrost area like it sho … read more

What to do if your climate control has failed?

Why does my GMC A / C heater jump from hot to cold?

This is an electrical component in the GMC climate control system that controls the hot/cold functions of the heater and the a/c heater box. If it loses its internal setting it can jump from hot to cold on its own or even go to heating when cooling is set. If this is the cause the actuator will need to be replaced.

How does the GMC climate control system work?

What kind of HVAC unit does a GMC CK have?

I reverse engineered the AC Delco 15-72548 Heater AC Control Unit. This schematic is pretty accurate, but there are some component values / types missing, either because I could not decipher the part numbers, or I did not remove them from the circuit to measure them.

What to do if your AC blower is not working?

Reassemble the tab to the fender with a tooth washer between the tab and the fender. Go try it again and see if you fixed it. If it still does not work then the problem is inside the little black box (Splice pack). Remove the box from the fender again.

Why does my climate control panel stop working?

I have no power to my climate control instrument panel. What would cause this and how do I fix it? have the same problem? First suspect is a defective control module. Second suspect is a blown fuse. Check out the diagrams (Below). Please let us know what you find. We are interested to see what it is. helpful?

What does the climate control module do in a car?

The climate control module, also known as a temperature, A/C or heater control module, adjusts your heating and air conditioning to keep your cabin heated and cooled. Depending on the vehicle, this can include temperature readings inside the cabin and adjustments to your HVAC system using actuators.

Why does my GMC Sierra not blow hot air?

Air won’t blow out of the dash vents but the other modes work fine. Also occasionally blows hot air in A/C mode. Turning off the ignition and restarting corrects the heat issue. Driver’s side heater/a-c works okay… passenger side only blows hot air, regardless of heat setting.

What to do if your Chevy Silverado has a heater problem?

With engine off, unplug air flow control module, replug in… can hear actuator motor running. Seems to cycle to “an end”, then return… motor runs a few seconds, then will not respond to any further commands unless unplugged and replugged. ’06 Chevrolet Silverado 2500 Duramax: Vents won’t switch properly at all.

What is the problem with my AC heater?

Problem Description. One or more heater & AC (HVAC) temperature and/or air delivery mode door actuator may fail, resulting in improper temperature or air delivery. If this occurs, fault code(s) should be stored in the HVAC control module which should assist in diagnoses.

How to fix a 2004 Chevy Silverado problem?

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