GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Depress the horn switch.

Horn sounds with switch depressed.

    •  Horns Always On
    •  Horns Inoperative

2

Release the horn switch.

Horn does not sound when switch is released.

Horns Always On

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