2003 2500HD A/C blowing warm @ idle
 

I have a 2003 2500HD w/ a 6.0 gasser. The A/C will freeze you to death at speed, but blows barely cool at idle. I realize that it will not blow as cold at idle, but it is on the verge of being warm. The dealership replaced the compressor, then added 1/2 lb of freon, then replaced the compressor again. Still blows warm. Has anyone else had this problem or know someone that has?

Thanks

RE: 2003 2500HD A/C blowing warm @ idle
 

don't quote me on it, my father has an 05 2500 hd, i read somewhere that its a safety precaution to prevent overheating, while the truck is not moving the compressor cuts off/back to take heat off of the engine that the moving air would help with otherwise....