Why is my Chevy Silverado not blowing cold air?

One of the most inconvenient vehicular problems is when the A/C won’t blow cold air. If your Chevy Silverado isn’t keeping you cool, we’ve outlined some of the most common reasons why this might be happening.

What was the a / C problem on my 1998 Silverado?

One day last year, I started my 1998 C-1500 350 2WD, and surprise – the a/c blew hot air. I said a bad word. I only use the truck to go to the lumber yard, so I just let it be – until today, when it was 98F and I got stuck in a 10-mile traffic jam (I said many bad words).

Why is my Chevy Silverado heater not working?

The only thing that the air conditioning system has in common with the heater is that they both use the climate controls and the blower motor. It is entirely possible for your Silverado’s heater to work just fine even when the air conditioner is not blowing cold at all.

Why does my Silverado Sierra not have a fan?

I only use the truck to go to the lumber yard, so I just let it be – until today, when it was 98F and I got stuck in a 10-mile traffic jam (I said many bad words). Dashboard switches appear normal, but a/c clutch does not engage. (Is this properly called a “cycling switch”?) Do not know whether the fan switch was on or off when tested.

What should I do if my Silverado compressor does not engage?

Hold the can of refrigerant upright and slowly open the valve on the charging hose. The pressure of your can will force the gas into your system. While the compressor may engage immediately, allow the can to empty before removing the charging hose.

Is the a / C clutch on or off on a 1998 Silverado Sierra?

Dashboard switches appear normal, but a/c clutch does not engage. (Is this properly called a “cycling switch”?) Do not know whether the fan switch was on or off when tested. Not sure what the function of the relay is – perhaps it closes when the fan switch is on? Will check tomorrow morning.

Why is my AC blowing hot air but not cold air?

Turn the a/c on and go out and put your hand on the line coming off the dryer, silver canister near the firewall. Be care ful as one line will be hot and one line cold. If the line is cold you have a door actuator problem. Easiest fix for that is get you a couple of shutoff valves at the auto parts and put in line of the heatercore for the summer.

What should coolant temp be when engine is hot?

With a good OBD2 code reader, you can also check the live data and the parameters of the CTS sensor. Check that the temperature value of the CTS is around 80-90c when the engine is hot. A lot of engine coolant temperature sensors have two wires and the sensor is controlled by Ohm.

What are the symptoms of a bad coolant temperature sensor?

Hence, it is advised to have your car inspected right away to avoid any serious problems. Here is a more detailed list of the common symptoms of a bad coolant temperature sensor. One of the first symptoms you will notice is that the check engine light will activate.

Why does my AC blow cold then blow warm?

The moisture can freeze into ice crystals right at the orifice tube or expansion valve, clogging it and stopping the flow. The symptom appears as: blows cold, then warm. If you shut off turn on the heat for a while, that’ll melt the ice crystals and the system will start cooling again. But it will still freeze up.

Why does my car air conditioner lose its cool?

A Leak in the A/C System A small refrigerant leak is the most common reason a car’s A/C gradually loses its cool. A leak is typically caused by a mixture of moisture and refrigerant that, when combined, creates a corrosive acid that eats away at seals, valves, and hoses in the A/C system.

Is your car air conditioner not blowing cold air when?

Ever had problems with your car about air conditioner, or AC, not blowing cold air when the car is at stop? This happens in most cars when the AC system of your car does not have properly maintenance and it definitely makes you irritated to stay in the car on a hot day with no cool AC.

Why does my AC blow warm air when I Turn on the AC?

Moved the temperature settings to hot, and the air came out significantly hotter than the “cool” air. Checked freon pressure, it is good. A little high actually. When i engage the A/C, i dont hear the compressor kick on, however my car does surge like it normally would when the air is turned on. Could it be something like the clutch or something?

Why does the AC blow warm at idle?

Since the AC compressor is driven by the engine, it doesn’t pump as much refrigerant when you’re at a stop or driving slowly. If the system is low on refrigerant, it will show up as AC blows warm at idle and blows colder when the engine is running at higher RPMs. Get your system refrigerant level checked.

Why is the AC cold in my Chevy Tahoe?

From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. I have a 2001 Chevy Tahoe with the 5.3L engine. I have an odd issue with the AC and was hoping an expert can shed some light on the problem. When the truck is driving, the AC is ice cold.

Is the a / C on my 2003 Silverado not working?

I am the original owner of the 2003 Silverado 1500 work truck (V-6) with only 56,000 miles and have a serious a/c issue (s) here in Florida! Anyone have any ideas on what I need to have done? Is it warm air? like if you turned off the AC and blowing cool? or is it hot

Why does my AC blow cold and then start blowing ambient temp air?

My AC will blow cold and then start blowing ambient temp air. Why? My AC will blow cold and then start blowing ambient temp air. Why? I have a 2002 Chevy Suburban 1500 LT. It has a climate Second opinion] I have a 2002 Chevy Suburban 1500 LT. It has a climate control (automatic settings for fan blowing and which vents to come … read more

Can a car air conditioner blow cold air?

ac will blow cold for awhile and then the compressor shuts down and blows warm air. I can turn the ac button off for a few minutes and then turn it … read more Air conditioning works fine on startup, very cold air. When vehicle is driven for a few miles, air conditioning stops blowing cold air, ie compressor clutch disengaged.

Is the Chevy Silverado’s air conditioner blowing cold?

It is entirely possible for your Silverado’s heater to work just fine even when the air conditioner is not blowing cold at all. That’s why troubleshooting the air conditioner is totally different than troubleshooting the heater.

What kind of air conditioner does a 2000 Chevy Silverado have?

2000 Chevy Silverado, V-8 Air Conditioner works for 10 to 15 minutes and then stops blowing cold air. It has a good 2000 Chevy Silverado, V-8 Air Conditioner works for 10 to… 2000 Chevy Silverado, V-8 Air Conditioner… Air Conditioner works for 10 to 15 minutes and then stops blowing cold air.

How long does Chevy Silverado V-8 air conditioner work?

2000 Chevy Silverado, V-8 Air Conditioner works for 10 to 15 minutes and then stops blowing cold air. It has a good Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP

Why is my a / C blowing hot air out of the passenger side?

It’s odd that one day my A/C works fine and the other it blows hot to the max air out of the passenger side and cold to the max on the driver side. Defroster isn’t working properly either because when I have it on it just blows air out of the regular vents.

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 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.

How can I Check my Chevy Silverado’s air conditioning?

Use a pressure gauge with a specialized air conditioning fitting to check the low pressure hose on the truck and make sure it maintains 100 psi with the engine off, and 35 psi with it on. First start the car and turn all the knobs to cold and max A/C.

Why is my AC not blowing cool air?

No matter how high you set that regulator, it does not seem to work. Well, there are many reasons behind your AC, not blowing cool air. From the leaking refrigerant to the bad compressor, even a tiny fault in the HVAC system can make you face difficulty with your AC.

What to do if your AC compressor is not cooling?

As a solution, it is recommended that you run the AC on full speed once in three weeks in winters and monsoon when you don’t use the AC frequently. There is nothing to worry about if your AC compressor running but not cooling. Sometimes, it just needs a visual inspection to determine which component is malfunctioning.

Why is my AC not blowing cold air?

The chemical Freon or simply you can call it coolant is the reason why the AC cools hot air quickly. The chemical can run out if there is any leakage in the AC. Thus, AC would not work, as there is no Freon in the system.

Why is the AC not working on my Chevy Silverado?

Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My A/C Working? What are common reasons my Chevrolet Silverado 1500 has air conditioning problems?

Why is my C-1500 AC not working?

If it’s low enough, the compressor will not even kick in. Just a thought before you start tearing things apart. Thanks. I only have an old R-12 gauge set, so I can’t actually test the refrigerant level.

How do you get air out of a Chevy Silverado?

In these cases, a coolant back flush is required to remove the air from the heating system. Locate the hoses that enter the heater core. Disconnect them to release any trapped air. Reconnect the lines. Top off the coolant. Flgure 3. Flush the heater system. This procedure refers to a quick release of air from the system.

Why does my Chevy Silverado blow cold air?

When you drive down the road the AC on the drivers side starts blowing out hot air. You have to stop and restart the truck for it to blow cold air again. The passenger side continues to blow cold air and is not affected. It started doing in one time a day but is now doing it four or five times a day. It is currently in the shop.

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 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.

Is the a / C blowing cold and then hot air?

It recently starting blowing hot air when the a/c is on but it only blows hot air on the drivers side. The passenger side still blows cold. The only way to get it to blow cold again is to shut it off, wait a few minutes and start it back. It doesn’t do it every day.

Why does my Silverado blow cold air and then hot air?

I have a 2004 Silverado 4×4 with duel temp controls. It recently starting blowing hot air when the a/c is on but it only blows hot air on the drivers side. The passenger side still blows cold. The only way to get it to blow cold again is to shut it off, wait a few minutes and start it back. It doesn’t do it every day.

What kind of air conditioner does a Chevy Silverado have?

The air conditioning does not blow cold. 2015 silverado with 55k. Do not hear the ac compressor kick in when ac button pushed. Hissing noise overheard when it does decide to work.

What happens if your AC unit blows cold air?

During operation, the high pressure side of the refrigerant system can reach pressures of over 275 PSI. Use extreme caution when working around the A/C system. Never disconnect or vent the refrigerant to the atmosphere. Refrigerant can cause extreme frost bite or blindness if it comes in contact with your skin or eyes.

What kind of safety belts does a Chevy Silverado have?

Trans Description Cont. Again NA Manual lap/shoulder safety belts, front/rear outboard seat… Looking for other models of the Chevrolet Silverado 2500HD?

Why does my Chevy Silverado keep blowing hot air?

From buying research to owner support, join 1.5 MILLION GM Truck Enthusiasts every month who use GM-Trucks.com as a daily part of their ownership experience. I would check the charge in the system. You might be just a little low on refrigerant. (Low enough to intermittantly trip the “Low-pressure” switch.)

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.

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.

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.

Why does my AC blow cold then hot then cold again?

All of a sudden the asri coming out of the vents went cold again – it seems like when you hit a bump in the road. 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.

Why does my GMC air conditioner stop working?

For about 5 miles the A/C worked normally till we hit a R/R and the bump made it stop blowing cold air and he was finally convinced. Back to the shop and 30 min later they found the problem. Turned out to be the low pressure switch, (under hood on bottom of small tank) it was corroded and causing a loss of electrical contact.

Why is my AC not working on my Chevy Silverado?

Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My A/C Working? What are common reasons my Chevrolet Silverado 2500 HD has air conditioning problems?

Why is my Chevy Silverado 2500 not working?

While there are a variety of reasons your Chevrolet Silverado 2500 HD air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor. What will be the outcome of an air conditioning system diagnosis?

Why does my Chevy Silverado truck not start?

The starting problems of a vehicle can be different. In some cases the truck starts at least sporadically and allows its owner to drive independently to the nearest specialist workshop. In other cases, the truck won’t start until the underlying problem is solved. The nature of the starting problems depends on their cause.

Why is my GMC truck not getting cold?

Mine is doing the same shit yours was, had it in the shop a few days back and he said everything was normal as far as pressures and freon charge go. Mine is cool, but not as cold as it should be. If I set the knob to 65 on auto, the blower is still on high w/ the re-circulate on after I drive 25 min to work.

Is the air conditioner on a 2014 Silverado still under warranty?

If it is a 2014, it should still be under warranty. Take it to the dealership and make them fix it. Of course that is normal for a GM truck for the air conditioning to blow warm air, my past 3 GM trucks all had this problem at one point or another. They were still under warranty and the dealership fixed them.

Why does my AC clutch fuse keep blowing?

If it fails then you have a wiring issue to the compressor. If it does not, then the ac compressor clutch is causing the high current draw and the compressor needs to be replaced. helpful?

Why does my Chevy Silverado blow hot air?

I have a 2007 Chevy… I have a 2007 Chevy Silverado. The A/C will start blowing hot air for no reason what so ever and with no warning. Once it starts blowing hot air, the only way I can get the cold air back is to shut the truck off and restart it. It will blow cold for anywhere from 3 hours to 3 minutes before doing it again.

Why are the vents on my Chevy Silverado stuck?

The blend doors may be stuck. Modern trucks make use of blend doors, which are plastic flaps found inside of the vents that act as a gateway for hot or cold air to pass through. These doors are controlled by electrical actuators, which respond to the buttons pressed on the dashboard.

Where does the heat go after the suction line?

Afterwards the heated vapor then moves to the compressor and condenser where the heat gets released by the air blowing through it and the refrigerant re-condenses into liquid and the cycle repeats.

Why is my car AC not blowing cold air?

The AC system in your car could go through all sorts of problems. One typical issue is the unit not blowing cold air, which could be punishing in hot weather. There could be several causes leading to this condition including compressor issues, low-level of refrigerant, trouble with the heater or AC controls, and others.

Why does my car AC line keep freezing up?

Really, the only thing that should be in your car’s AC system is refrigerant and oil. To keep these things inside and others — such as air, moisture and dirt — out, the pipes, hoses and seals are specially designed to maintain a tight seal. The problem of car AC lines freezing up is caused by moisture that has been introduced into the system.

What to do when your car AC is not cooling?

Once you have your gauges hooked up, move on to observing the AC compressor itself. With the engine running turn the A/C on max cool, set fans high, and make sure that the clutch is engaging on the compressor. Note: this is not the pulley, but the center piece that engages the pulley to the compressor shaft.

Why does my air conditioner not cool down?

USUAL CAUSE Low refrigerant level is the most likely cause of poor cooling from the air conditioning. If there is no cool air coming from the air conditioning system, an electrical malfunction could be the cause. A defective relay, compressor clutch coil or damaged compressor are all possibilities.

Why does my car a / C keep blowing hot air?

It may be cutting off if both all vents are going hot. There are 2 a/c lines going in to the fire wall on the passengers side under the hood, feel these lines when the a/c blows hot. The lines should be almost ice cold. If they are not cold, then the compressor is turning off.

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 AC in my car blowing cold?

Chevrolet Avalanche 1500 LT: 2010 avalanche not blowing cold. 2010 avalanche not blowing cold. Cust states ac not blowing cold and hasn’t for a year, just cool. Low side pressure was around 30 and high side … read more

Why does my engine temperature stay on cold?

Reasons Why Your Engine Temperature Gauge Stays on Cold. 1. Faulty Engine Coolant Temperature Sensor. 2. Faulty Gauge/Cluster. 3. Broken Wires to the Sensor Or to the Gauge. 4. Bad Thermostat.

What to do when your AC blows cold air?

Some college and advance… ac will blow cold for awhile and then the compressor shuts down and blows warm air. I can turn the ac button off for a few minutes and then turn it … read more Air conditioning works fine on startup, very cold air.

What should I do if my AC is not working on my Silverado?

Start by inspecting the condition of the cabin air filter on your Silverado 1500. Instead of changing it directly, it is often recommended to first clean the pollen filter. This can be done, for example, with a vacuum cleaner or a compressed air system, removing at least a large part of the visible dirt particles.

Why does my 2005 Tahoe blow hot air?

My 2005 Tahoe hava AC giving hot air problem. AC would suddenly blow hot air just on the driver’s side while the passenger side still blew cold. The only way to correct it was to turn the car off and back on and then it would immediately start blowing cold again. This happens intermitently.

Why does my AC stop blowing cold air?

When vehicle is driven for a few miles, air conditioning stops blowing cold air, ie compressor clutch disengaged. Clutch won’t engage again until … read more I have a 2004 tahoe with only 42000 mi on it. recently the ac stopped working and when i restarted the car later on it kicked back on.

Why is my Silverado Sierra blower not working?

Additional Info: The resistor makes a clicking sound when the control knob is turned to setting five. Another thread suggested that the contact plug may be burnt and need cleaning/replacing. That would restrict power flow. Got the same problem with mine on 2nd highest setting, gonna look into it in spring.

Why is my blower not working on speed 5?

If your blower is not working on speed 5 then the blow motor resistor (I think its called that) is burnt and you need a new one. It is a 5 minute fix.

Why is my Chevy Silverado not blowing cold air?