Diagnostic Aids
WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
If diagnosing a Horn - Poor Tone condition, inspect the following:
- Debris or water in the horn assembly.
- Proper horn mounting hardware torque. Refer to Fastener Tightening Specifications .
- Debris in the joint where the horns attach to the vehicle.