GMC Troubleshooting Questions? Ask a Mechanic for Answers
Hello. My name is ***** ***** I will be assisting you today. Does the temperature change we you turn the dial?
I understand. How is the air volume? Is there sufficient air coming through the vents? Just trying to get a better understanding.
Thank you. Just a moment, please.
The issue that you are having is likely going to be with the temperature door actuator. These components are responsible for changing the temperature when command by the hvac module. The issue is likely to be the actuator(s), but can also be the control unit itself. You will need to have these component inspected to verify this. I am attaching location information for the actuators along with the removal procedures for both sides.
Here, I am attaching description information for you on the temperature delivery.
I am suspecting the issue to be in the actuators. Test can be confirmed with a capable scan tool. Here is the electrical circuits, just in case.
If you require more information on this issue and/or are not satisfied, let me know, please, and I will attempt to assist you further on this. I hope this information points you in the right direction. If you have any further questions or concerns on this issue, feel free to ask. If you are satisfied, and have found this information helpful, a positive rating would be greatly appreciated. Thank you.
A positive rating does not close the session. We will still be able to communicate and I will continue to assist you with this issue as needed.
It's not very difficult to replace the actuators. I have attached the replacement information. Although, you will need to have the circuits inspected with a scan tool in order to confirm and guarantee this issue.
Just as a reminder, please do not forget to rate the service as it is necessary in order for experts to receive credit for answers provided. Thanks again.