I have a 2003 1500 with the 4.7, 130,000 miles. Got home this afternoon and noticed a clicking noise coming from my AC compressor. I first thought it was just cycling off and on but that isn't it. It does it with the fan on and the AC on or off. It stops when I turn the fan switch off. The clutch is engaged without pushing the AC button and the fan on. I pulled the AC clutch fuse for now until I can figure it out.

Thanks in advance!

 

Sounds like a frozen clutch.

 

I forgot to add that I changed the clutch 6 months ago.

 

The clutch disengages when I turn the blower off.

 

make sure the control is not set in defrost as the a/c is energized during this also

 

That's what that part was, I guess I never noticed it before. With everything in AC mode it is still clicking constantly and gets louder at acceleration.