Originally Posted by Nick1994
Early 00's GM cars often have bad blend door motors under the dash, and other bad electronic motors. Might be stuck warm.
If it is a blend door issue, the system probably is over charged now. If someone is not familiar with A/C systems, they usually do more harm than good by assuming the system is low on charge and start putting refridgerant in.
The best answer to this is to have someone qualified look at it and stop guessing.