GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Push the horn button.

    â€¢ The horns sounds.
    â€¢ The horn tone is normal.
    â€¢  Horns Inoperative - One Horn
    â€¢  Horns Inoperative
    â€¢  Horns - Poor Tone

* Refer to the appropriate symptom diagnostic table for the applicable abnormal result.