When did my GMC Sierra air conditioner stop working?

I had a 2001 GMC Sierra that did this when truck was less the one year old (summer of 2001 is when it was). The dealer had the truck in the shop idling for a long time and the A/C worked perfectly. I told them to take it for a ride and see. So the service manager in an effort to convince me nothing was wrong went for a ride with me driving.

Is the a / C running on my GMC Truck?

It runs and gets somewhat cool but does not get cold. Not even cool enough in 85 degree temps to be comfortable. He checked the freon levels and they were actually high so he got it to the normal levels. No leaks. He checked the filter and it was good but went ahead and replaced it. The compressor is running.

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.

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 is my air conditioning not working on my GMC Sierra?

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.

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.

Why does my GMC P / you compressor not turn on?

No. Theres a schrader valve to prevent freon from escaping when you replace the switch. Just make sure you dont overtighten it. This is on a 2004 gmc p/u I have checked the fuse and relay all good. I have jumped high pressure switch .I have no power going to the high pressure switch wiring is good.

Is the a / C not getting cold in a GMC Truck?

Also truck is a 2003 silverado 5.3L im actualy having the exact same problem, mine has plenty freon but still when it blows its not cold. its not hot but not cold maby blowing 75 degrees? idk but i know it sucks. Yes it does!

Why is idle speed not coming back up?

If the ISC system is working correctly, the PCM should adjust idle speed to keep the engine from lugging down when the A/C compressor engages. If idle speed drops down and does not come back up, the ISC system is not responding the way it should.

Can a stalling engine be intermittent driveability?

Intermittent driveability problems of any kind are always a challenge to diagnose. When a customer brings you a vehicle and complains of a stalling problem, you may not have much to go on other than their description of what’s happening and when it happens.

Is there check engine light for intermittent stalling?

Many times, there will be no check engine light and no fault codes to give you a clue as to what might be causing the engine to stall. So the trick to diagnosing an intermittent stalling problem is to catch the vehicle when it’s acting up — and that rarely happens when you have the vehicle in your shop.

Why are the cluster gauges going out on my GMC?

Sounds like the cluster gauges are beginning to crap on you. Common problem on the 02 to 04 trucks. Time to get the new updated style which has the corrected problem on the cluster gauge. This is was a factory recall and is covered by GM, both my dads and mine went out and were replaced for free, take it in.

Why does my AC compressor clutch not engage?

Why AC clutch won’t engage If the clutch doesn’t engage, the problem could be a blown fuse, an open in the wire to the clutch coil, a bad clutch coil, a poor ground, or a low pressure lockout. AC compressor clutches receive power in a number of ways.

Why does my air conditioner stop working in the morning?

We added a can of freon, tightened the Schrader valve, etc. When it is cold in the morning it works fine. When it heats up during the day it will run for a while and then the compressor kicks off. If I turn off the A/C in the truck for about 3-5 minutes it will work again for a while when I turn it back on.

What happens if you run a compressor with no oil?

At that point you’re running the compressor with little to no oil. You may get it to accept a charge, but you may have already damaged the compressor before the system reaches full charge. NEVER try to bypass the low pressure switch. Doing so will force the compressor to run with inadequate oil and can destroy the compressor.

Why is my GMC Yukon XL AC not working?

While there are a variety of reasons your GMC Yukon XL 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. What will be the outcome of an air conditioning system diagnosis?

Why does my Chevy Tahoe Air Conditioner stop working?

Fast forward to four days ago, the air conditioner stopped working, again… Before it completely stopped working (before the snowflake would blink three times and not allow the compressor to kick on), I could here an occasional hissing noise in the rear cargo area, it wasn’t constant, but it could be heard about every 30 seconds.

Why does my GMC Sierra AC blow cold and then warm?

Basically, AC is cold for first 30 minutes of day, and then turns warm. I use to could turn the compressor off using the switch on the dash, wait a few minutes, then turn back on and it would cool down for 5 to 7 minutes then turn warm again. A never ending manual cycle through the day!

Why is the AC not working on my Chevy truck?

Drove for 15 miles, come back, no resistance on the fan clutch, which I’m assuming if it’s not drawing enough air across the condensor, it will cause high pressure side readings and eventually kick the compressor off. I’m gonna change it today, stay tuned.

What to do when your car AC is running?

Check the radiator fans to make sure at least one fan turns one when the AC is switched on. However, some cars operate both fans at low speed while driving and switch into high speed mode when the AC is running. So get tricked into thinking your fans are ok simply because they’re running.

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 2004 GMC Sierra 1500?

No one has added a helpful site for this 2004 Sierra 1500 problem yet. Be the first! Read reviews of repair shops in your area. Enter your zip code: For some unkown reason my heater in my truck will only work on high (NUMBER 5) position and no other position.

Why is my GMC Sierra 1500 blowing hot air?

When the air conditioner in your 2003 GMC Sierra 1500 starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system.

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.

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 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 car air conditioner blow cold then warm?

Any number of culprits could be causing your car A/C to blow cold then warm air, including: 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.

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.

What causes Chevy Silverado to shut down while driving?

Parts stores can scan it for you if you don’t have access to a scanner. But we don’t recommend driving anywhere until your Silverado is fixed, since dying at the wrong time can cause a collision. 1. Out of Fuel

What to do when your car AC won’t work?

Thanks ASTE25, Today I replaced the orffice tube, drier bottle, and flushed all lines including condenser, and evaporator. Didn’t see anything in the orffice tube upon replacing it. Recharged, cooled great for a while. On my way home, starting getting warm again, turned ac off for 10 mins, turned back on, cooled for 5-10 min then back to warm air.

Why does my Silverado Sierra keep shutting off?

Clock, A/C, cruise control reset themselves and all dash lights flash. Twice when I turned the truck off everything shut off like I had a dead battery, but would come to life minutes later. Alternator and battery tested good. Does anyone know where I can start troubleshooting this? seaoatsguy wrote: I have a 2008 Silverado LT 1500.

Why does my 6.0 shut off while driving?

Sounds like you have a faulty icp sensor, it’s probably full of oil in the connector. It’s on the very back center of your engine right behind the ipr valve. You might be able to see it and if it looks oily that is probably your whole issue.

What kind of engine shuts off while driving?

6.0 Shuts off while driving NO codes! will crak back up after a few minutes!! QUICK HELP! I have an 05 F250 with 6.0 diesel. Driving down the road the engine shut off. No warning, did not run rough just quit.

Why is my AC not working on my Silverado?

When I turn on AC, both sides will blow cold for a few minutes and if I hit a small bump in the road, the driver’s side will turn to extremely hot heat and I have to turn off the engine to reset it and it goes back to cold air until I hit another bump in the road.

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.)

What’s the RPM of a Silverados Vortec V8?

At the initial start up in the morning, the truck will start normally, then immediately the RPM’s will drop down to about 300-400 RPM’s, then “catch” back up and operate normally. I’ve cleaned the MAF, no codes, and the truck is stock. I haven’t done any checking with the fuel system or vacuum and don’t run any ethanol.

Is the air in my GMC Sierra cold or warm?

First thing in the morning the air is cold. After 30 minutes of using, it turns warm and does not get cold again, unless I turn the truck off for a while and restart.

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?

Why is my GMC Sierra 2500 not working?

What are common reasons my GMC Sierra 2500 HD has air conditioning problems? While there are a variety of reasons your GMC Sierra 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.

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?

What happens when you turn off the a / C on a Silverado?

Basically the a/c stops cooling after a while, sometimes 30 mins to an hour. It doesn’t blow heat, just becomes ambient, musty and damp, on both the passenger and drivers side. I can switch the sytem off, keep driving for 5 mins, switch it on and it will cool nicely.

What to do when your GMC Truck won’t shut off?

Might have a system that keeps running until oil cools to a certain temp to keep from blowing the turbo? Should shut off when tapping the brake when key is removed though. Click to expand… Start by disconnecting the aftermarket alarm and see if it still happens. And next time just pull the fuel pump relay it’s easier.

It is possible your AC system may have a slow leak, or even be overcharged. The AC system will not operate if it senses pressures too low or high. If you get a pressure gauge by Duracool from Wal-Mart you can check if pressure is somewhere between 25-38p.s.i is perfect, and no more than 45 p.s.i.

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.

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