I have around 16k on my LLY....In the last few weeks when my AC compresor (I assume) kicks on I can hear and feel when it clicks on and off...................With the Duramax I did not think I would ever feel the comp. kick on.......As I stated this just started a couple weeks ago....Is this something that others exp?

I understand that this is caused by a high or low pressure sensor making the compressor kick on and off. Bring it by your service department and they will measure the amount of pressure on the system and make the correct adjustments needed. All at no charge to you (unless you are over 36000 miles already) Good Luck!