Why are the vents blowing hot air in my Chevy Silverado?

I changed the battery and after the new battery was installed the driver’s side vents blew HOT air even with the AC set to 60. I tried disconnecting the battery cable for a few minutes, cycling they key off/on several times, adjusting the vents to dash/floor/front/etc, pulled the 10A HVAC fuse with the truck off…nothing worked.

Why does my AC keep blowing hot air?

Recently when running the AC, it will randomly begin blowing hot air instead of cold. No matter what I try, the only proven way to get cold air to blow again is to shut the engine off, wait around 5 seconds, then crank back up. After doing this everything seems to work fine for a week or so…then the AC starts blowing hot air again.

Where can I find the part number for my Silverado AC?

Thanks to their wonderful website, there is no direct link or part number. When added to cart it shows as “Air conditioner and heater, Evaporator and heater components, Actuator, Mode temp and def, Mode temp and def – 2003-07 – 2003-07” Somewhere along that path, you will see a View Illustration button.

How much is the AC unit on a Silverado?

The hardest part was the last screw holding up the plastic cover above the center hump. Gonna kick that engineer. The part is $137 on gmpartsdirect. Thanks to their wonderful website, there is no direct link or part number.

How does temperature control work on a Chevy Silverado?

The temperature control has no effect controlling temperature. Sometimes its hot and sometimes its cold. The temperature cannot be set it has a mind of its own. Very frustrating to be in a vehicle that has no heat when its cold and the A/C pumps out hot air when it hot. Sometimes you can hit it lucky to where your A/C works when you want it to.

Is there a problem with my 2001 Chevy Silverado?

No one has added a helpful site for this 2001 Silverado problem yet. Be the first! Read reviews of repair shops in your area. Enter your zip code: Search CarComplaints.com for these popular complaint phrases…

Where are the vents on a Chevy Silverado?

Looks like it’s on the left side bottom, right on the driver’s side. Before you replace it try this: 1.Turn the ignition switch to the OFF position. 3.Remove the RADIO fuse for 10 seconds and then reinstall the fuse. 4.Place the ignition switch in the RUN position and wait 40 seconds for the ECC module to initialize.

Is the Chevy Silverado 1500 a / C heater blower motor?

Shop AutoZone for Chevrolet Silverado 1500 A/C Heater Blower Motor. 10% OFF $75. Use Code: DIYSAVE10 Online Ship-to-Home Orders Only

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.

How much does a Chevy Silverado heater cost?

One or more heater & AC (HVAC) air delivery and/or temperature mode door actuator may fail. This can result in incorrect air delivery or temperature. If this occurs, fault code (s) stored in the HVAC control module should be available to assist with diagnoses. The average cost for a Chevrolet Silverado 1500 AC Diagnosis is between $53 -$67.

Why is hot air blowing in the cool setting?

Dooe could be moving as the conpressor kicks on and off due to low refrig. had this issue with my wifes car and still have to patch the leak . . . damn yard work taking all my time I think GM had a service bulletin on this.

Why are the vents on my GMC Sierra stuck?

The most common symptom of course is lack of control over the vent output position and normally it will be stuck in the defroster only position. If it is not currently stuck in the defroster position but you are changing the actuator anyways. make sure that you set the vent position to defrost before starting this procedure. You will see why later.

Where is the actuator motor on a GMC Sierra?

The goal is to leave the cam/cog in place on the end of the heater-a/c case and to remove the actuator motor only. The old assembly on the left and the new one on the right. Taking the new actuator motor and installing it on the old cam/cog.

What to do about HVAC issues on a Chevy Silverado?

If you’ve noticed the control issues happening after disconnecting the battery or having repair work done, then the quickest fix is to recalibrate the HVAC. Turn the ignition off. Find the three HVAC fuses; Two are under the hood and one is in the cab fuse box.

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.

Where are the vents on my GMC Sierra?

No output on dash face vents or defrost vents but floor works ok. I have tried the pulling the fuses both under hood and left of dash but that did not fix my problem.

Where are the HVAC fuses in a Chevy Silverado?

Turn the ignition off. Find the three HVAC fuses; Two are under the hood and one is in the cab fuse box. Turn the AC and heater switches to the off position, and turn the temperature controls to the coldest setting. Set the HVAC to automatic. Plug in the fuses. Start the engine and let it run for five minutes.

Why does air come out of the dash vents?

If system (fan switch) is off and I just have it on vent, the outside air mostly blows at your feet. Sometimes it will come out of the dash vents. If the a/c button is pressed in but fan selector is off the amber a/c light will be on sometimes or just flicker.

How do you turn off HVAC in a truck?

Turn the AC and heater switches to the off position, and turn the temperature controls to the coldest setting. Set the HVAC to automatic. Plug in the fuses. Start the engine and let it run for five minutes. The HVAC should readjust automatically. Figure 1. Pull and reinsert the fuses for the HVAC before starting the truck.

Why is my Chevy 1500 heater not working?

When blower motor is on 2 highest settings,air can be heard roaring in the vent system but the proper amount of air volume coming from vents is not as when newer.Took door actuator off and seems to be working fine off of unit. Will explore the possibility of mode actuator being stuck or bad.The search for this problem continues.Post 5/26/2011.

Why does my Chevy truck blow hot air?

I bought my 2K 2500 truck in the winter and never tried the AC to see if it worked. Now that it is hot out I’ve found it always blows hot air – even with the AC on. I checked the AC pressures and they are in the acceptable range and the compressor cycles on and off like I’d expect it to.

Can a failing valve cause an air compressor to overheat?

A failing thermal valve can lead to heating issues with an air compressor. It is always best to have a replacement thermal valve on hand in case the preexisting valve on your machine needs to be changed out at any point.

How does the a / C system cool the radiator?

This hot refrigerant is then cooled down by running it through the condenser. The condenser is cooled by ambient air in the front of your car just like the coolant in the radiator is cooled. On most cars the condenser is actually in front of the radiator and gets cooled first to make sure your A/C system gives you consistently cool air.

Why is my car a / C blowing hot air out of the vent?

Your car’s A/C system is one that operates a little differently than you might think. Instead of actually creating cool air, it instead removes the heat and moisture from the air inside of your car, leaving you with cooler feeling air.

Is it normal for AC to blow cold air?

When I got home it was still blowing cold air – I put a guage on the suction side and it measured 50 psi which should be normal since I am in Texas and the ambient temp is near 100 degrees. This has been intermittiently cutting in and out lie this for a month or so.

Why does my car have no air in the vents?

Step 3 – A fan blower motor is controlled by either a switch in the passenger compartment or by a computer. If this fan motor is starting to fail it will cause the fan motor to run at a lower speed resulting in low air flow. To test this condition an amp meter is needed, connect the meter lead to the power wire of the fan motor.

Why is my Chevy Silverado heater not working?

Blew cold air for first 2 miles, started to get warm, back to cold, then to hot. Just as I slowed down to a stop sign, it blew cold air again. As I left the stop sign, immediately went back to hot.

What to do if there is no air coming through a vent?

You’ll need a professional to locate the disconnected duct and seal it so that no air escapes. Leaky/holey air ducts. If you’ve got just a little air coming through the vent, the ductwork leading to the room may be leaky or full of holes. This problem is actually pretty common.

Why are the vents not working on my Chevy Silverado?

Check the blend door actuator. If the blend doors aren’t the issue, proceed to Step 2. There may be no refrigerant in the system. When there is a lack of cold air coming from the vents, most will agree that there is a leak in the system.

Why do my vents blow only hot or cold air?

Chevrolet Silverado 1999-2006: Why Do My Vents Blow Only Hot or Cold Air? The Chevy Silverado climate control system uses several different components that come together to either cool down or heat up the cabin. When one or more of these components fails, the heat or cold air capabilities go along with it.

Why does my Chevy Silverado air conditioner blow cold air?

Refrigerant, commonly referred to as freon, is a chemical that, when fluctuating through high and low pressures, becomes cold. The air conditioning system uses several components that all work together to help make this happen; however, when a leak occurs or a component fails, the production of cold air stops as well.

How do I stop no air from dashboard vents?

This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Work the thumb wheel from one side to the other while checking the airflow. The flow should stop and start again, if the thumb wheel does not make a difference the problem is somewhere else.

Why are the vents blowing hot air in my Chevy Silverado?