GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the horn diagnostic system check performed?

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Go to Step 2

Go to Diagnostic System Check - Horns

2

Remove the horn relay.

Did the horn stop sounding?

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Go to Step 3

Go to Step 4

3

Replace the horn relay.

Did you correct the condition?

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Go to Diagnostic System Check - Horns

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4

Find and repair the short to battery in the horn feed circuit. Refer to Circuit Testing and Wiring Repairs in Wiring Systems. Did you find and repair the condition?

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Go to Diagnostic System Check - Horns

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