My son has a 1996 Buick and there is no problem getting partsHopefully the airbag in the steering wheel is not integrated with the horn in a vinyl housing.
The vinyl shrinks with age, and eventually to the point where there is sufficient pressure to continuously honk the horn.
When that happened to the 1997 Le Sabre I bought for my kid, the options were disconnecting the horn or replacing the airbag. The replacement options were NOS at around $1600 and around $800 for salvage.
Parts online not including labor, the colors were the last ones anyone would choose (non matching of course) and there was no guarantee the vinyl hadn’t shrunk to a similar point.
Eventually we bought him a Tacoma. I thought I gamed the system. I didnt.
Hopefully your mileage will vary.