Why is the heater on my GMC Sierra not working?

Why is the heater on my GMC Sierra not working?

Have a 2000 gmc sierra. Heater not blowing out hot air. Both input and output hoses hot. Can air . On hot it is just blowing lukewarm air . Putting hotter. Temp gauge is registering just below 210 Could be 2 things, one would be a bad temperature valve, a plugged heater core, or a blend door actuator.

Why is the heater not working on my Buick Enclave?

Not having a functioning heater makes driving much less comfortable, and can be a sign of certain issues. At the simplest level, there are two main reasons why the heater is not working. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue.

Why is my Acura MDX heater not working?

At the simplest level, there are two main reasons why the heater is not working. If it’s not coming on at all, it’s usually either the blower motor or some other wiring issue. If the heat is blowing, but blowing cold, it has something to do with the coolant getting to the heater core, or the heater core itself.

Have a 2000 gmc sierra. Heater not blowing out hot air. Both input and output hoses hot. Can air . On hot it is just blowing lukewarm air . Putting hotter. Temp gauge is registering just below 210 Could be 2 things, one would be a bad temperature valve, a plugged heater core, or a blend door actuator.

Why does my GMC Sierra blow hot air?

Our 04 Sierra 2500HD has had on and off problems the last year. Our most recent two was blowing warm air and then stopped altogether. No diagnostic codes. But our sons’ very smart “GMC guru” figured out it was the ignition switch.

What are common reasons my GMC Sierra 1500 has air conditioning problems?

What are common reasons my GMC Sierra 1500 has air conditioning problems? While there are a variety of reasons your GMC Sierra 1500 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.

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.

Why does my car heater blow cold air instead of hot?

If your car heater blows cold air instead of hot air it might stuck vent or plugged up heater core. In order to make sure that the heater is warm we will use OBD scanner to read the real time coolant temperature.

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.

What’s the temperature of the air conditioner in a car?

When your AC is functioning well you look forward to taking a ride in the car, but if it starts to malfunction, it can be a hellish experience because the temperature of a hot car can quickly hit 140 degrees or more.

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.

What to do about AC intermittently blowing hot air?

The permanent solution isn’t very hard or expensive. http://chevroletforum.com/forum/silverado-…lacement-22624/ The temporary fix is to turn the truck off and back on. That usually fixes mine for a few days. I pulled my actuator out the other day to see for myself.

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.

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.)

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.

Why does my water heater blow hot and cold?

It blew fairly warm for a few seconds then turned to cold. When I have the setting on cold, its cold. When its on hot, its hot until I turn the blower on.

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.

What to do when your Chevy Silverado vents blow hot air?

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. Also, try turning the temp to max then back to minimum. f1maxis wrote: I just had a similar issue with my 08 Silverado.

Why does my GMC Sierra 1500 blow cold air?

The dash vents do not blow any air. It seems like a common problem. Im gonna go ahead and replace the mode actuator! A/C only cold on passenger side. Drivers side blows hot. There is no adjustment on the drivers side for temp. If you turn off the truck and then restart, it might work for a bit or not.

How is the heat in my Silverado truck?

First, and most important problem: The heat in my truck is virtually non-existent. After about 10 minutes, it will blow warm air (not hot), but only if it’s above 40-45 degrees. Anything under that (40 and below), it blows kind of lukewarm air, barely warmer than the inside temperature of the truck.

Why does my Chevy truck have no heat?

If your heater core is still cold, there are four possible additional problems: first, the thermostat is stuck open, allowing coolant circulation at all times, thus never allowing the engine to warm up. You will be able to tell this from your temperature gauge, it shud be somewhere in the middle.

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