Symptoms - Horns. Buick GL7 (Export) 2000

For 1990-2009 cars

Important: Review the system operation in order to familiarize yourself with the system functions. Refer to Horns Description and Horns Circuit Description .

### Visual/Physical Inspection

• | Inspect for aftermarket devices which could affect the operation of the Horn System. Refer to Checking Aftermarket Accessories in Wiring Systems.

• | Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom. It is possible that both horns are defective causing an inoperative horn system.

• | Perform the following if the horns buzz or have a harsh tone:

- | Inspect for debris in the joint where the horns fasten to the vehicle.

- | Test the torque of the horn mounting hardware. The horn mounting hardware should be tightened to a torque of 10 N·m (7 lb ft).

### Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to Testing for Intermittent Conditions and Poor Connections in Wiring Systems.

### Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom:

• | Horns Always On

• | Horns Inoperative

• | Horns Inoperative - One Horn

• | Horns - Poor Tone