Write to GM for new Manual On the left End of the dash open the door over them may need looking glass to see writing but it will say what fuss is for what
the fuse holder should be located under neathe the steering wheel right over by the gas and brake pedals under the dash maybe hard to find but there is fuse located in there that is labeled radio unplug that and replace it then your audio should work and for the stereo there may not be a fuse in the radio player itself you may just have to un hook or turn off everytime you get out of the car
is there no off button? if the cd player doesn't turn off when you turn off the car, the fuse you need should be located on the rear of the actual cd player. you may need to take your cd player out. strange that it would still draw power from battery if you turn off the car or radio.