Buick Repair Questions? Ask a Mechanic for Answers ASAP
Hi Im David, thanks for visiting the site, the contacts under the airbag module are most likely bent and very close to the metal of the steering wheel. you said this is the second wheel, but was the clockspring assembly replaced also? another possibility is the horn relay. the blade contacts sometimes will change characteristics due to temperature changes and short out. and there is also the possibilty of the wiring to the horn itself chaffing against a metal surface due to 21 years of vibration and wear.
hows it going? just checking in