Not sure if mines working properly or not. I have a 99 Silverado v8, a 2000 Tahoe v8, a 06 Silverado v6, and of course the Camaro SS (LS3). All of them but my Camaro work great. Say you run both the Recycle Air, and the AC for a few mins, turn off the AC and for the rest of the time its COLD air blowing just from the Recycle Air (most of the time its cold even w/o using the AC) However in the Camaro its always just blah air; not hot/warm or cold/cool air. Does everyone elses Camaro do this? Or just mine. Its nothing to complain over, was only curious. And no I'm not to cheap to run the AC before anyone says lol. Always fill up with 93!