Have a 04 cavalier a/c is not blowing cold air when I'm stopped works fine when cruising down the road. Thanks for any help.

 

Is the engine cooling fan on when the A/C is running. It should be. The A/C requires air to go through the coils to cool the R-134. As you drive the air would go through the coils. If the fan is not running then wouldn't work when the car is sitting. The fan should always run when the A/C is on so check it and if that is the prob. Then the fan or fan thermo is not functioning.