In my 2003 Silverado, am having issues with my AC not blowing out quite cold but not hot air either.. I cant see the compressor to check to see if it is kicking on, and I cannot get a reading on the freon level without the compressor being on. How do I go about "jumpstarting the compressor" to test it. The recirculate button causes the air movement to pickup, the snowflake button blows out hot air, and the auto digital climate control set at 64 degrees blows out cool air.. Anyone have any ideas on what to check? I have searched and found a few things, blend door actuator if one side if different than the other, but they are both the same, and a temp control actuator, or temp door something or another.. Any input is appreciated!