Cadillac Repair Questions? Ask a Mechanic for Answers ASAP
I will try to help you.
Normally the radio should go off when you open the door.
If the radio is staying on, after you have removed and opened the door, I would replace the drivers side door lock assembly.
I have replaced many for this condition.
Hope this helps.
I'll see what I can find for a part number.
Are you left hand drive or right hand drive?
Here is some information for replacement.
Here is an example:
Suits 2008 -2014 drivers door which would be LEFT side for US.
I hope my advice has been of assistance to you.
I have done many on our customers cars.
Hope it sorts your problem also.
Do you need any further help?