CD Stuck In Dashboard Single Disk Player (Jack)

Tried radio repair places - they won't touch it because they do not know codes and they would only replace it. Suggested I go to GM Dealer - I did and guess what! THEY WERE GREAT CREDIT WHERE IT IS DUE - Gave me guy straight away. Here are the tips:

Burned CD's are a different width to commercial CD's and laser sometimes cannot read - Freezes up.
Do not insert known damaged CD's - Above applies.
Blow the dust out of it occasionally

Tips to fix -

Take out fuses, both the radio and CD player go off - Very quickly re-insert fuses otherwise you may need the codes to get everything going again - (we discovered this morning that the Jack allows a re-insertion for at least a small amount of time before codes are needed - News to the mechanic also)

then

Try to eject the disk
Turn off radio and restart it
Hold your finger on start button (radio) to allow it to reset and at the same time press eject - My disk popped out.
They tell me that sometimes it is just a matter of taking out the fuses and re-inserting them - triggers eject when re-setting.

If nothing works - MONEY

File it guys - you never know when it might happen and you may not get the great GM service I received today.

PS

I do not work for them - The opposite applies - It has been a very fractious relationship - hence my praise when they really try.