2003 chevy 2500 6.0 ltr. my air conditioner pully squeels and rattles at 2500 rpm. the noise stops when I turn off the ac. What can I do?

SOURCE: The air conditioner is blowing

It seems like a recharge may be in order. I'd try it for sure. Most recharge kits come with a pressure gauge that fits on the end of the coolant can and shows you how much refrigerant you have in the system.

SOURCE: 2003 honda accord air conditioner

this means that your a/c has a leak somewhere in it....or the a/c compressor has gone bad.....you can check the a/c charge with a guage you can pick up at your local automotive store. if the charge is good then chances are that your a/c compressor is bad....kindof a costly fix.

SOURCE: 2003 Honda Accord 4 cyl ex Air conditioner Problem

The accord has to radiator fans, if it blows hot air and then the ac comes back on. My accord did exact same thing. The solution was replacing one of the fan. Mine happen to be right fan, when facing the front of the car. hope this might help.

SOURCE: 2003 GMC Envoy stalling w/ AC on when stopping

try turning up the idle ajustment screw also have alternator checked, another solution would be to have your car tuned up weak spark from your coil worn plugs wires etc. not enough power is being produced

SOURCE: AIR CONDITIONER QUIT WORKING

Pop the hood, start the vehicle and turn the AC on. Watch the compressor, it should have a center that rotates on an off and you should hear a clicking sound. This is the compressor clutch you are looking at. If the compressor is not doing this, check the fuses for the AC. If the fuses are good, then most likely the high side sensor switch is not working, therefore the clutch never engages and the air never gets cold.

Try that and get back to me, ok?