[jb1016]

Originally Posted by IndyAnne

Here's the link to the AC core idea. Those guys said it makes a big difference if your AC isn't cooling like it should, or the velocity of the fan seems lower than it should be.

http://www.fullsizechevy.com/showthr...ght=dash+paint

Man, this is good stuff. Thanks for linking to that; I'm gonna try it when I get some free time (if that ever happens)

As for the AC noise, I think what you're describing is the sound of the compressor cycling on/off?? At idle, with the AC on, mine clicks on and off every few seconds, and the idle speed of the engine is slightly affected every time. I was told this was totally normal for these trucks.