GM Service Manual Online
For 1990-2009 cars only

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Press the horn switch.

    • Horns sound.
    • All of the horns sound.
    • The horn has a good tone.
    •  Horns Inoperative
    •  Horns - Poor Tone

2

Do not press the horn switch.

Horns do not sound.

Horns Always On

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