steering wheel radio controls - FYI
If you have problems with your steering wheel radio controls, this info may help.
Both my '92 and '93 had steering wheel radio button problems. Both cars had switches that had to be replaced, and they're soldered to a circuit board on each side of the airbag assembly. Within a few months after I replaced several switches on my '93, they ALL stopped working at around the same time. It turned out that the little gray rubber pegs inside were becoming soft and were no longer rigid enough to push the switches when the buttons were pressed. These little pegs mate between the plastic buttons and the switches on the circuit board. I replaced all 8 of them (4 on each side) and now all switches are working again.
If you're careful, you can just pull the fuse for the horn and do the repair. Beware - if you don't pull the horn fuse (behind passenger side cover) or disconnect the battery, the horn will sound continuously once the spring-loaded electrical connection (white wire) behind the airbag assembly is removed. And the white outer nylon cylinder that holds the black spring-loaded connector sleeve is VERY WEAK (terrible design!) and may break, even if you're extremely careful not to stress it.
'99 Bonneville SLE, white, 112,000 miles
'02 Park Avenue Ultra, white diamond pearl, 88,000 miles