GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

DEFINITION: Horn(s) have a poor sound.

1

Was the Horns Diagnostic System Check performed?

--

Go to Step 2

Go to Horns System Check

2

Press the horn switch

Does horn(s) have a poor tone?

--

Go to Step 3

--

3

Replace horn(s), refer to horn replacement.

Is repair completed?

--

Go to Horns System Check

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