Why do the vents in my Chevy Silverado blow only?

Recharge the A/C. There may be air trapped in the system. Hot coolant is responsible for passing through the heater core, creating hot air which can than pass through the vents and into the cabin. On some occasions air can become trapped in the system, stopping the coolant from doing its job.

Is the Silverado 1500 AC blowing cool air?

I have a 2001 Silverado 1500 with the 4.8L engine. The AC works fine but the heater only blows cool air. We just replaced the thermostat and it still doesn’t work right.

Are there any problems with my Chevy Silverado?

Some drivers had problems right after buying their pickups. Others are suffering with sweltering temperatures right now. One forum I checked has 19 pages of complaints dedicated to the air conditioning issues.

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 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.

Why is my Chevy Silverado blowing white smoke?

Here are some of the other symptoms of a blown head gasket in the Chevy Silverado: If your engine is running rough, and billowing out white smoke, it very well could be either a blown head gasket, or a cracked head. It’s important not to ignore a potential blown head gasket.

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 is my water heater blowing luke warm air?

We just replaced the thermostat and it still doesn’t work right. In the process of replacing the T-stat we flushed the whole system but not the heater core directly. You can get luke warm air on say the vent setting but if you move the knob to another setting and then back to the vent we seem to loose what little warmth we get.

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 suddenly start blowing hot air?

I have a 2004 Yukon with 160000 miles and about a year ago the AC would suddenly blow hot air just on the driver’s side while the passenger side still blew cold. After a few weeks it then stating blowing hot air on both sides. The only way to correct it was to turn the car off and back on and then it would immediately start blowing cold again.

Why is cold air blowing out of my car?

If you are getting consistent cold air blowing out of the drivers side and the passengers side isn’t blowing out that same cold air, you may have a defective blend door actuator. If the system was low on refrigerant, you wouldn’t be getting consistent cold air blowing out what so ever.

Can a car vent blow cold one side and hot the other?

In a vehicle with dual temperature controls you may encounter a situation where the vent blows cold one side, hot on other side or vice versa.

What happens if you run a Chevy Silverado Hot?

The Chevrolet Silverado is a rugged truck that is made for a tough workload. Coolant system failure can eventually cause major engine damage as running the truck hot can lead to head gasket failure or loss of power eventually causing the motor to stop running.

What can I do about my 2000 GMC Sierra heater?

I have a 2000 hmm siarra . Having a problem with it it is stuck on the defrost vent and only blowing hot air . I had the a/c checked out . They said it was fine working good ,and no leeks . They said my hvac control box was bad . I changed it but still the same thing ? What can it be . 2 people found this helpful.

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 air not blowing out of the dash vents?

A few different items can cause the air to not blow out of the dash vents. The most common are a blend door or a control switch.

Is the air conditioner blowing out of the vents?

The air conditioning in my cadillac doesn’t blow out of the vents on the dash. But it blows air out of the side vents on the doors. How do I use the self diagnostics feature on my air conditioner?

How do you change the vents on a Chevy Silverado?

Remove the vent cover. Locate the driver-side and passenger-side blend door actuators. Loosen the mounting screws for each actuator and disconnect the sensors. Install the new actuators. The actuator should return to the center once the battery is connected. Press the buttons on the climate control interface and make sure everything works.

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 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.

Where are the vents on a car located?

Step 1 – Most air control vents are equipped with a flow control door that is located at the vent outlet. 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.

How to troubleshoot and repair vents low air flow?

Easy step by step guide one how to troubleshoot and repair vent low air flow, this article pertains to most vehicles. Step 1 – Most air control vents are equipped with a flow control door that is located at the vent outlet. This door is controlled by a thumb wheel that when activated will open and close the vent air flow door.

Why does my GMC Yukon blow hot and cold air?

A small servo motor that turns hot and cold air valve in the heater box. I pulled the small flat motor off and noticed the shaft was jammed and would not turn when i moved the temperature selector knob from hot to cold. I reached in and turned the air valve with my finger and verified that it was not stuck.

Why is my a / C blowing warm air?

A refrigerant leak is unique in the sense that refrigerant evaporates instantly into a gas once it isn’t under the pressure of your closed loop A/C system. A/C systems are sealed and therefore don’t require refrigerant top-off’s. If the refrigerant level is low then there is a leak that needs to be addressed.

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 is my HVAC not working on my Chevy Silverado?

Pull and reinsert the fuses for the HVAC before starting the truck. If this didn’t work for you try Step 2. If it seems like one side is stuck at one temperature only, it could mean the blend door actuator is no longer working. The actuator turns a door to switch between warm and cold air, but there are multiple actuators in your truck.

Why does my Chevy A / C keep blowing hot air?

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. Submitted:11 years ago. Category: Chevy Show More Show Less

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.

Why does my a / C vents blow cold but warm drivers?

It will not be apparent if just looking at freon gauge pressures- they will be normal. But a system that is 1/2 pound low will cause the passenger side vents to blow cool or cold air, and the drivers side to be less cool or even warm on this car. There is simply not enough freon capacity in the system to cool the air to the drivers side.

Why are the vents on the passenger side warm?

Repairs for this problem = A/C compressor, orifice tube and drier replaced about 1 year ago. The problem I have is that when you turn the ac on the cool air only comes out the 2 vents on the passenger side. The 2 vents on the drivers side have warm air blowing out. A/C is controls are set to max air and max cold on the temp control.

In a vehicle with dual temperature controls you may encounter a situation where the vent blows cold one side, hot on other side or vice versa.

Why does my car AC blow cold air then blow warm air?

But that cold air turns warm fairly soon after because the high side pressures build to the point that the high pressure switch shuts off the compressor clutch. Once pressures equalize, the high pressure switch allows the compressor to start up again. The cycle repeats over and over, providing a short period of cold air, followed by warm air.

Why do the vents in my Chevy Silverado blow only?