GM Service Manual Online
For 1990-2009 cars only

Horns Diagnostic System Check

Step

Action

Normal Result(s)

Abnormal Result(s)*

1

Depress the horn switch to the ON positon.

Horn sounds with switch depressed.

    • Horns on at all times.
    • Horns Inoperative.

2

Release the horn switch to the OFF positon.

Horn does not sound when switch released.

    • Horns on at all times.
    • Horns Inoperative.

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