Diagnostic Aids
WARNING: This page is about a different car, the 2007 Cadillac DTS. 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