GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Press each of the horn switches and release.

Both horns sound then stop sounding when that switch is released.

    â€¢  Horns Inoperative
    â€¢  Horns Always On
    â€¢  Horns Inoperative - One Horn

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