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2021 Air Conditioner issues

SteveG63
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SteveG63 New Member

SteveG63

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Posted

Good morning all I have a 2021  2500 HD with 27,000 miles on it over the past 4 months I have been experiencing issues with the A/C . In my company truck on a normal day it sits running at an idle for 12 to 13 hours . The A/C works as it should for 6-8 hours and then all of a sudden it will start blowing extremely hot air out of the vents and will keep doing so until I take it for a drive (5 miles or more )and then it blows cold air again. I have had it to the local chevy dealership and they are saying the system is fully charged and the compressor is working as it should. They said they are unable to diagnose the issue. I have shown a picture of the A/C line when the air gets hot it is hot to touch and when the air is cold it’s cold to touch . If anyone has suggestions I would greatly appreciate it Thank You Steve IMG_1042.thumb.jpeg.fcd8669d4e0d653f608297e9352a61fc.jpegsue 

TT331FB Enthusiast

TT331FB

Posted
Posted

Low on charge.  At idle refrigerant pressure drops until compressor kicks out.  To verify, see if the compressor is turning when the suction line gets hot. 

  • 3 weeks later...
GMCustomerService Senior Enthusiast

GMCustomerService

Posted
Posted
On 9/1/2023 at 7:11 AM, SteveG63 said:

Good morning all I have a 2021  2500 HD with 27,000 miles on it over the past 4 months I have been experiencing issues with the A/C . In my company truck on a normal day it sits running at an idle for 12 to 13 hours . The A/C works as it should for 6-8 hours and then all of a sudden it will start blowing extremely hot air out of the vents and will keep doing so until I take it for a drive (5 miles or more )and then it blows cold air again. I have had it to the local chevy dealership and they are saying the system is fully charged and the compressor is working as it should. They said they are unable to diagnose the issue. I have shown a picture of the A/C line when the air gets hot it is hot to touch and when the air is cold it’s cold to touch . If anyone has suggestions I would greatly appreciate it Thank You Steve IMG_1042.thumb.jpeg.fcd8669d4e0d653f608297e9352a61fc.jpegsue 

This is certainly not what we like to hear, SteveG63.  Please know, customer satisfaction is extremely important to us. Our team would be more than happy to take a closer look into the concerns with the air conditioning system on your 2021 Chevrolet Silverado. To do so, please send an email to [email protected] with ATTN: SteveG63/GM Trucks in the subject line.

Please include your contact information, VIN, a brief description of your concern, and the name of your preferred dealership. We look forward to hearing from you. To learn more about GM’s Privacy Policy, please visit https://www.gm.com/privacy-statement.html. The information you provide may be monitored and recorded and is subject to the GM Privacy Statement.
 
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