The reasons I am interested in this are:
1. I have never owned another Vehicle that did this.
2. I want to make sure that is what GM intended for it to do.
3. Because BOTH the salesman and service manager of my local dealership said it's not suppose to do that..but it now seems they don't know what they are talking about.
4. In the winter time I think it is a waste to run the airconditioning compressor with the heater on!
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