06-26-2012, 03:54 PM | #15 |
Sinister
Drives: 2012 ZL1 /Chevy tahoe 07 Join Date: Sep 2011
Location: Wyile TX
Posts: 90
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same thing happen to me here in TX 106 today and it takes 3 mins before it starts cooling off .. so should i take it in?
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06-26-2012, 03:58 PM | #16 |
Drives: C6 Z06 Corvette Join Date: May 2011
Location: Arizona
Posts: 187
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06-26-2012, 04:35 PM | #17 |
Drives: Lots of stuff plus a 2012 Black ZL1 Join Date: Feb 2012
Location: AZ
Posts: 42
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06-26-2012, 04:40 PM | #18 |
Drives: 2012 Blk ZL1 Join Date: Dec 2011
Location: Baton Rouge, LA
Posts: 938
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Took mine to the dealership last week for the same issue and apparently GM is working on a fix now. It's only for a select batch of ZL1's from what I was told and it is a software issue with the AC. GM is supposedly working on an update that can be downloaded from the dealership. It has to do with the car not recycling the air from inside the cabin but rather constantly pulling in hot air from outside. Mine has done it twice since I had the car.
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06-26-2012, 04:45 PM | #19 |
Drives: C6 Z06 Corvette Join Date: May 2011
Location: Arizona
Posts: 187
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06-26-2012, 06:59 PM | #20 |
Drives: 2006 Corvette conv/2007 Avalanche Join Date: Jan 2012
Location: Niceville, FL
Posts: 155
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06-26-2012, 07:00 PM | #21 |
Drives: 04 Silverado Join Date: Jun 2010
Location: Floriduh!
Posts: 1,113
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my silverado does it but i have a bigger engine then stock.....
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06-26-2012, 09:53 PM | #22 |
Drives: Camaro's, always have, always will. Join Date: Oct 2010
Location: Home of the brave
Posts: 4,851
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I live in Jersey, weather extremes we get there. It's been on the cooler side for the most part, cloudy, rainy, hugh humidity, with hear spikes up into the 90's. The ZL1 runs hot, does not matter what the weather is. Heat outside the car only compounds the issue. Put the vent on, on a cool day, and the passenger compartment gets warm<from the S/C and heat buildup in the engine compartment> On hotter days put the window down. On real hot days...grin and bear it, or window up with A/C. AZ is crazy hot. The A/C system takes awhile to recirculate. The buildup heat in the engine compartment must dissapate with fresh air cooling moving through the condensor. It takes more time the hotter the environment. So, it's a multiplaction of heat, the ZL1 engine compartment due to the S/C, plus ambient outside air temperature. It's gonna take time to cool the Beast down.
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06-26-2012, 10:29 PM | #23 |
Drives: 2010 Duramax; 2012 CTS-V Coupe Join Date: Apr 2012
Location: Houston, Tx
Posts: 387
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Keep in mind that your condenser is sandwiched between the heat exchanger and radiator. So if you were at normal operating temp and turned the car off on a hot day you now have a hot radiator and hot heat exchanger pouring heat into the cooler condenser. Heat equals pressure so when you turn the car off the condenser starts heating up quickly and building pressure in the A/C lines. The pressure switch in the A/C system see's the high pressure so it wont turn the compressor on until it falls to a safe level. Once you start driving and moving air across the stack, or the fans run for a few minutes, it cools the condenser down and drops the pressure to a safe level and allows the compressor to kick back on. All the more reason to install some puller fans behind the HEX.
And jaggedx is right about the Duramax. The A/C system on my last two trucks have been the most awesome A/C's I've ever owned in a vehicle. They WILL freeze you out of the truck. (pun intended) |
06-27-2012, 01:05 PM | #24 |
NuptualNemesis
Drives: Silver 1SS M6 - 480hp 11.57/120.79 Join Date: Jul 2009
Location: Baton Rouge, LA www.Divorcefor399.com
Posts: 310
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Try a water wetter. O'Rielly has an off brand that is green that works great. Make sure the rubber strip under the front bumper is intact. This creates a low pressure area. Lowered cars scrap them off.
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06-27-2012, 04:10 PM | #25 | |||
Drives: 2018 ZL1 1LE (2)79Z28 72RS 67SS 69Z Join Date: May 2009
Location: Arizona
Posts: 422
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Quote:
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Initially turning on a hot car I can understand the AC not working right away. My problem was sometimes as I was driving it just stopped working. I almost thought this was a breakin thing cuz it was really obvious before my breakin period ended. This is very different than the problems in the 5thGen LS3 or L99 which both had early AC problems as well. I do not want to take it in to my dealer please keep us informed! ......
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06-27-2012, 05:41 PM | #26 |
Drives: 2010 Duramax; 2012 CTS-V Coupe Join Date: Apr 2012
Location: Houston, Tx
Posts: 387
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What he said. Water Wetter is an excellent product that works well especially for those that live in hot climates. Old school drag racers used this stuff religiously. For those of you who live in the South its a great $15 investment and you don't have to tear into your cooling system. Just pour a bottle into your radiator or expansion tank with the existing coolant and within minutes its working. And yes...mix it with your intercooler coolant as well. You can pick up the original Water Wetter at most of your major auto parts stores.
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06-27-2012, 07:23 PM | #27 | |
Drives: Lots of stuff plus a 2012 Black ZL1 Join Date: Feb 2012
Location: AZ
Posts: 42
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Quote:
There is definaately something going on with the AC programing. I have lived in Arizona for over 40 years and I can tell the difference between a car that is just hot from sitting in the sun and an A/C system that is malfunctioning. Thanks again for all the input here. We may just solve this one! |
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06-28-2012, 05:11 AM | #28 |
I'm in Az too and experiencing the same exact problems you describe with the a/c in my ZL1. After reading what you said here I completely agree that it is malfunctioning. It definitely has an issue. I would also like to know what it is without going to the dealer. Please keep me updated also, and thanks for the posts.
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