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 heater is not working?

Turn the truck off and back on and sometimes this works. Blows heat out of driver side vents and drivers side center vent. Passenger side blows cold air for air conditioner setting. blowing cold air then after much trying with slide selecters a little heat then nothing.Will take to the shop soon.

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.

Why does my dual zone heater go cold?

Dual zone climate control module only get heat at the highest setting. when you set it to a lower setting by 1 degree it goes cold. I changed the module and one actuator. The other one on top is moving for the different direction of air flow. (is there only two?)

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.

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.

Where does the air come from on a GMC Sierra?

Any suggestions on a good repair manual that will cover the A/C systems and circuitry. Air only comes out dash vents. Changing to floor or defrost switch position does not change air flow. I’ve got a problem I got hot air coming out the vents on the driver side,and cold air on the pass.side that includes when im running the air.

Why is my GMC Sierra 2500 not working?

’06 Chevrolet Silverado 2500 Duramax: Vents won’t switch properly at all. Sometimes if I switch them, pull over and shut my truck off and turn it back on then it will sometimes switch to that vent. But only works on defrost and bi-level vents. Floor or any mixed doesn’t work and will switch to one or the other that works.

What kind of air blower does a diesel truck have?

New here and searched but could not come up with an answer. 2003 2500 HD with a Diesel. I have good air circulation when truck is first started then it goes away. I have all my speeds and you can hear it running but not getting any thing out any of the vents.

Why is my GMC Sierra 2500 HD heater not working?

Learn if it’s a simple fix or time to seek out a trusted technician. Not your vehicle? Why Isn’t My Heater Working? What are common reasons my GMC Sierra 2500 HD has heater problems?

What happens when the blower fails on a Chevy Equinox?

When the blower motor fails, the air conditioner and heater may still work, and heat or cool may be felt at the vents, but the air pressure will be dramatically decreased. This Read More When the heater control valve fails, adjusting the temperature may not change the air temperature at the vents, whether hot or cold.

What are the climate controls on a 2004 GMC Sierra?

My 2004 has dual climate controls. The passenger side will blow heat but the driver side won’t. it blows cold but not hot. i just replaced the control … read more Vocational, Technical or Tra… I have a 2004 GMC Sierra that has dual climate controls. The passenger side works in both hot cold and blended postions. The driver side … read more

What’s the problem with my GMC Sierra AC?

I’ve got a problem I got hot air coming out the vents on the driver side,and cold air on the pass.side that includes when im running the air. Blows cold air on driver’s side and hot air on passenger side. Should heat both sides. when heater is on it will throw heat for a while and then starts to throw cold air out the driver side vents.

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.

Why does my GMC Sierra not blow hot air?