One problem related to horn assembly has been reported for the 2001 Chevrolet Blazer. The most recently reported issues are listed below.
While driving about 45 mph would lose control of vehicle. Will not keep direction, and wandering all over road, and wind could force vehicle out on road. Consumer states after repairs, front end is noisy. Air leak in vehicle. Rough idle. Alignment problems. Starter is noisy. Horn is hard to push.