Have a factory installed CD Changer in an 02 LXI. When the changer is connected and the power is turned on, it flashes the 1-4 lights and the Ready light several times. Then the 1 & 2 slot lights flash, then 3 & 4, and it repeats. It won't take a CD and I can't get the (also factory) stereo to switch over to CD mode. Is this a simple error code type of thing I can fix, or does it need to be replaced?

 

could be the radio or the changer either way replace