Diagnostic Aids
WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
Rotate the steering wheel while pressing the horn pad to identify intermittent and poor connections within the steering column.
If the horn produces only a weak noise, inspect the following:
- Debris or water in the horn.
- Incorrect Mounting Refer to: Fastener Specifications .
- Debris on the component.
- Vehicle components that vibrate while the horn is sounding.