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Today being the first nice and warm day in Colorado, mid 80s, I noticed that my new 2022 C8's AC temp is not cooling well as it should.
I put the temp at 60 (coldest) and tried the fan at all speeds, from low to all the way to the high, still the blown air was not cold as I expected. My other cars, a BMW and a MB were blowing nice cold air.
On a hot day I will not be comfortable.
I thought that GM makes one of the best AC for cars and I am a bit disappointed.
Now I will be forced to take my C8 to my Chevy dealer for service and I hope it is a simple fix. Maybe there is a leak and needs to be topped off with the R-134a refrigerant?
Any one else having issues with their C8 AC?
....
I thought that GM makes one of the best AC for cars ..
Agree and mine stays set at 72F and on 100F days as well as any other it is fine. Yep hope it's simple. Lots of long lines from and back to the front AC Condensers to the engine compressor than Evaporator under the passenger dash.
These are the AC and engine coolant lines in the center tunnel. But all accessible via a plate bolted to the bottom of the center tunnel.
Was the A/C button lit on the button wall? I once thought I had the AC on, but it wasn’t cooling, then I noticed the A/C button on the wall wasn’t lit. I hit the A/C button and freezing cold air began to blast from the vents…
Hi BIG Dave, as soon as I read your post I went and tested my C8 and I noticed that either the wall AC switch (between the seats) or the LCD front-center panel can turn the AC on or off, the AC light turn on and off too on both locations as well.
Maybe I just need a little refrigerant boost.
Hi BIG Dave, as soon as I read your post I went and tested my C8 and I noticed that either the wall AC switch (between the seats) or the LCD front-center panel can turn the AC on or off, the AC light turn on and off too on both locations as well.
Maybe I just need a little refrigerant boost.
Can’t give a boost. The reason is cause it is new. If you would need extra coolant it would be because of a leak. Being it’s new it’s doubtful.
My advice take it to your nearest dealership
Today being the first nice and warm day in Colorado, mid 80s, I noticed that my new 2022 C8's AC temp is not cooling well as it should.
I put the temp at 60 (coldest) and tried the fan at all speeds, from low to all the way to the high, still the blown air was not cold as I expected. My other cars, a BMW and a MB were blowing nice cold air.
On a hot day I will not be comfortable.
I thought that GM makes one of the best AC for cars and I am a bit disappointed.
Now I will be forced to take my C8 to my Chevy dealer for service and I hope it is a simple fix. Maybe there is a leak and needs to be topped off with the R-134a refrigerant?
Any one else having issues with their C8 AC?
Quick small clarification. The C8 uses R-1234yf, not R-134a. The service schedule requires the replacement of the desiccant every 7 years now. And, supposedly, the service equipment isn't supposed to allow recharging if it detects a leak.
If you have a thermometer, put it in the vent to see what temperature the air is. Or use an infrared thermometer pointed at the vent.
I thought mine was weak also and had the dealer check it. They said it was within specs
It does blow cold are but not what I would call "GM cold". Its not bad -- just not great. Its not a deal killer. I have more an an issue of adjusting the vents.
As suggested previously, for the coldest AC, use the Recirculation setting. Air conditioning works on a design called Delta T. This is a specification that will cool approximately 20 degrees (depending on design specifications) lower than the temp of the intake air temp. So on outside 100* intake air, the system is able to cool to Delta T = 80*. Likewise, using / recirculating inside air the inside air cools 20* lower than the cabin temp. As the temp of the cabin drops, the cooling gets colder, i.e. cabin temp 80* cooling at vents would be 60*. As the cabin cools to the set temp, it progressively gets more efficient and cycles the compressor to maintain the desired temp. All this is subject to interior temperature losses and the interior furnishing's ability to cool to desired temps. This system is not particularly comparable to heating from scavenged temperatures derived from engine coolant at 180 +/- .
Having the same issue as OP. Will talk to the dealer about it during the scheduled oil change in a couple of months. OP, please let us know what the dealer says
From the 2020 Service manual, the maximum vent temp (with A/C set to minimum temp, maximum fan speed, recirculate on) with 85 degree ambient temp is 55 degrees if relative humidity is below 35%, 57 degrees at 50% humidity and 61 degrees above 50% humidity. At 95 degrees ambient temperature, the maximum vent temps are: 61, 63 and 66 degrees. At 105 degrees ambient temperature, the maximum vent temps are: 64, 66 and 70.
Interesting thread. I'll be interested to see if I have any issues with my C8, given the pretty consistent 105-110 degrees here in Las Vegas during the summer. I must say that the vents in the dashboard look pretty small (wide but very tall), and I hope this is not an issue for my car. While the previous posts discuss actual air temp coaming out of the vents, and if not low enough, could be a problem, something else to consider is an appropriate window tint. I found that getting what I remember as a crystal nano coat window tint made a huge difference in how quickly and well the car interior cools off. I had a 1999 Honda Civic with no window tint at all when I moved to Las Vegas, and putting in a high quality tint made a HUGE difference in air conditioning that car.
Yes, what Zymurgy said as well, with high efficiency systems Delta T of 30 degrees is quite common. Had a Nissan PU that would blow a cold fogg in the summer here, in high humidity of the Heart of Dixie. Those in varying humidity, YMMV.
Interesting thread. I'll be interested to see if I have any issues with my C8, given the pretty consistent 105-110 degrees here in Las Vegas during the summer. I must say that the vents in the dashboard look pretty small (wide but very tall), and I hope this is not an issue for my car. While the previous posts discuss actual air temp coaming out of the vents, and if not low enough, could be a problem, something else to consider is an appropriate window tint. I found that getting what I remember as a crystal nano coat window tint made a huge difference in how quickly and well the car interior cools off. I had a 1999 Honda Civic with no window tint at all when I moved to Las Vegas, and putting in a high quality tint made a HUGE difference in air conditioning that car.
I have no trouble with mine in 100+ temps in Texas. It cools very well. I do have Xpel Prime XR Plus (nano-ceramic) tint that provides 99% IR Rejection and 97% IR Rejection.
Yes, what Zymurgy said as well, with high efficiency systems Delta T of 30 degrees is quite common. Had a Nissan PU that would blow a cold fogg in the summer here, in high humidity of the Heart of Dixie. Those in varying humidity, YMMV.
I had a 1996 Nissan Pickup that thing had the coldest ac and like you said would blow cold fog . Newer car ACs have a different type of refrigerant metering device I believe . We have an Express Van that Ac seems not to cold on mid 80s days but the hotter it gets outside the colder it does seem
to blow . My C8 so far seems to be following that same pattern I’m waiting on the 90 plus days that are coming to see how it does .
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Weak AC on 2022 C8
