Why does the AC blow hot air on my 2005 GMC Sierra?

The AC on my 2005 Sierra blows hot air after it has run a while when it is above about 85F. Turnu=ining the AC off and – Answered by a verified GM Mechanic We use cookies to give you the best possible experience on our website.

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 does my car AC keep blowing hot air?

If your car AC performance seems to degrade slowly, that’s probably a best-case scenario for you. It means that the refrigerant loss has been gradual, over a period of months, and that’s fairly normal. In most cases, this means that your refrigerant can just be recharged, and you’ll be on your way again.

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 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 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 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.

Why does my GMC Sierra 1500 blow hot air?

The shops act like they have never heard of the problem…All they say is, bring it in we’ll test it and charge ‘n arm and a leg..then say they couldn’t find anything….REEPERS! Drivers side will blow hot air while passenger side is cold.

Is the a / C on my GMC Sierra working?

Have never had a problem with the a/c, has always blown ice cold until about a month ago while driving starting blowing extremely hot air. Went home checked fuses to see if any were blown. In which none of them were. The next morning got in and it was working fine.

What causes a GMC power window to move?

The passenger side switch is the probable cause. The driver’s side switch uses the relays in the passenger switch to operate the window and if this is defective a good driver’s side switch will not cause the window to move. Replacing the passenger side switch should fix the problem.

Where is Fuse b on GMC power window?

Locate fuse B on the left side of the dashboard. This is a circuit breaker. Remove the fuse for one minute to reset the system. With the ignition in the ON position use a voltmeter to check if there is power on one side of the circuit breaker and not on the other.

Where is the hot air vent on a GMC Truck?

It’s underneath the passenger dash, where your feet go. Take off that black kick panel thing, and it will be right there. The passenger side does whatever the HVAC panel tells it to, but yes, when both sides are set to cold, the driver’s side is HOT, the passenger’s side is COLD. Anyone have a write up on this ?

Do you need a seat cover for a 2006 GMC Sierra?

Seat looks like factory new now. Great cushion and replaced with the new oem seat cover for 2006 GMC Sierra. It fit flawlessly, but take seat entirely out and flip over. You will need the front special socket, and then you can use the multi point socket in 7/16” ? For the rear smaller bolt heads.

Is the driver’s side hot and the passenger side Cold?

Take off that black kick panel thing, and it will be right there. The passenger side does whatever the HVAC panel tells it to, but yes, when both sides are set to cold, the driver’s side is HOT, the passenger’s side is COLD. Anyone have a write up on this ?

Where is the drivers side actuator on a GMC Truck?

When your drivers side blows hot, check your passenger side, it will probably be cold. The driver side actuator is really easy to change. It’s underneath the passenger dash, where your feet go. Take off that black kick panel thing, and it will be right there.

Where does the air come from in a GMC Sierra?

This 2005 GMC Sierra came in with the complaint that the air will only flow from the defroster vents, regardless of where it is commanded to. This Sierra has auto a/c controls and no floor mounted center console.

Why is there no air coming out of the radiator?

This may not be the correct answer but I get the same problem on my work truck (2005 freightliner) and the problem is that if the a/c is used when temp outside is cool the a/c core or whatever the radiator type thing is under the dash gets frozen over and will not let the air blow through the vents….

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.

Is the air conditioner on my GMC truck not working?

CCMS HAS ENDED ITS INVESTIGATION INTO THIS ISSUE. If you own a GMC or Chevrolet vehicle, you may have noticed that the air conditioning is not…well…working. You are not alone, as a number of consumers have complained that their GMC and Chevrolet vehicles pumped out only hot air.

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 is my Chevy truck leaking hot air?

If the A/C line cracks, it could spray oil and refrigerant onto the A/C compressor, making the source of the leak hard to identify.

Why is my AC not working on my GMC Sierra 1500?

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 GMC Sierra 1500 has air conditioning problems?

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 GMC AC keep leaking hot air?

If the hose is not properly restrained—as is the case with the affected vehicles—one of the crimped metal fittings on the hose end may eventually start leaking due to the constant flexing of the hose in that location.

Where is driver side hot and passenger side Cold?

If its the dual climate and the drivers side is hot while passenger side is cold, look under your dash were the foot output comes from, and follow it to the center of your dash and youll see it, it should be facing the drivers door.

Why does my car AC blow cold air on one side?

If the car AC blows cold air on one side and hot on the other, there are a few different causes but it’s likely the blend door actuator, also known as the temperature blend door actuator or vent mode door actuator

What to do if your air conditioner is blowing cold air on one side?

If the air conditioning in your car is blowing hot air on one side and cold air on the other, there could be a simple fix like adjusting the temperature or it could be time to replace a part like the temperature blend door actuator.

What kind of air flow does a GMC Sierra have?

9 people found this helpful. Click on the print – it will become full screen. Right click on the full size and copy it to your folder. Then click on that “Best answer” button. 12 people found this helpful. 1995 Chevy 5.7 lye when in AC circulation mode no increase in air flow.

Why is my Chevy Silverado air conditioner not working?

My 1998 GMC Sierra 4×4 5.7 engine is having an air conditioning pain in my hind end. The pump engages then shuts off engages, shuts off. Last year it was doing the same thing so I figured it needed charging. Put on the can that has a gauge on it hooked up the hose.

What are the symptoms of a bad AC pressure switch?

The most common symptom of a bad AC pressure switch are that you will notice that the AC compressor is cutting on and off rapidly when you are idling your car. These switches between on and off can be noticeable on the engine’s rpm, and you may see or feel fluctuations from it.

Why is my GMC Sierra air conditioner not working?

Lack of Refrigerant – Your Sierra’s air conditioner will not work if the refrigerant has disappeared due to a leak. In fact, most won’t even cycle on without the right amount of refrigerant pressure. This is far and away the most common reason that your Sierra’s air conditioner is not functioning.

What should the ambient temperature be in a GMC Sierra?

Install the J 43600 ACR 2000 Air Conditioning Service Center. The ambient temperature must be at least 16°C (60°F). Do not induce additional air flow across the front of the vehicle during the test. Record the ambient temperature displayed on the J 43600.

What should the high side pressure be on a GMC Sierra?

Your low side pressure should be 30-35 PSI and your high side pressure should be 200 PSI. The orifice tube regulates the flow of Freon into the evaporator and the accumulator is not only your filter but also removes moisture that when reaches freezing can block the flow if the moisture is not absorbed by the accumulator.

What should I do if my GMC Sierra blows cold?

If R-134a comes in contact with any part of the body severe frostbite and personal injury can result. The exposed area should be flushed immediately with cold water and prompt medical help should be obtained. R-134a is the only approved refrigerant for use in this vehicle.

Why does the AC blow hot air on my 2005 GMC Sierra?