I believe the only way to fix this would be to replace the steering wheel with one from from a junker car. I don't think the controls are available to purchase individually and you would need to take the wheel apart to replace them in any case. Do what I did with my Bonny, live with it (much cheaper)
No.
push the mute button.
http://www.carstereoremoval.com/htm/stereoCodeGM.htm Check this website to see if it addresses your questions.
http://www.modifiedlife.com/1995-pontiac-bonneville-car-radio-wire-diagram/
Begin by removing the decorative cover from your 2001 Pontiac Bonneville radio. Remove the radio retaining screws. Slide the radio out and remove the wiring harness and the antenna cable.
pull out controlers gently with flat blade screwdriver detach wire in back
go to your local Pontiac dealer and ask if you can see the diagram
There are a series of wires that run from the steering wheel controls to the radio. An electronic circuit could be used, to combine several controls into fewer wires.
The steering wheel controls are probably bad The only fuse is the radio fuse and if the radio works the fuse is OK Also if you do not have the original stereo, and your new stereo does not have a place to plug in those controls they will not work.
Had the problem with Bonneville not starting....turned out to be the security module. Your mechanic should be able to bypass the security module with a $15 part from Radio Shack. Pretty easy fix.
Go to Radio Shack they wii replace it
The cruise and radio switches do not share a common fuse.