Anyone else have any idea what might cause this.

 

Is power being supplied to the A/C clutch or is the right fan kicking on high?

 

The right fan is not even coming on and there is absolutely no power at the compressor. The fans come on at the desired temp and keep the motor cool but I really don't understand this A/C problem.

 

I would still check the tap. If I remember correctly there are several green wires in that loom where you tap into the a/c. I did this too, and the a/c would only blow hot air. But your saying that the a/c is not working at all huh?

 

i bet the green wire is cut inside the tap or the fuse that supports it is blown. that would be the one thing that would cause the ac and the high speed fan side not to work. imo

 

this post may help.

http://forum.ls1truck.com/index.php?showtopic=5575

 

I had a similar problem. My compressor would not kik in and therefore the fan would not turn on. I took it to the stealership and found out that it was a harness, relay that burns up and the compressor does not kik in. Got it replaced at the dealership under warranty and have not had this problem since. I'll look into the part that was replaced, post it up later on today

 

Well, I had several times to take my truck in to the stealership to get a relay switch/cycling switch replaced on my a/c, they said it was a common problem, but the a/c would still kick on, it would just blow hot *** air.