Audio Systems: 1996 Firebird Orginal Stereo, communication problem, cd drive

Question
I have a 1996 Firebird thats CD player is telling me ER22 when I put a CD into the slot, and then it keeps the CD inside and random will spit it out. Also has given a ER30 code at one point.

Answer
bad laser   can not read information  or bad disc to many scratches the other code 30 is a communication  problem  on the cd drive

so i can tell you that the laser is damage and keeps the cd inside trying to read
sorry i can not help much but the radio needs to be service