GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1999 🢒 Bonneville 🢒 Body and Accessories 🢒 Horns 🢒 Horns Inoperative - One Horn

Step

Action

Value(s)

Yes

No

1

Did you perform the Horns System Check?

--

Go to Step 2

Go to Horns System Check

2
  1. Disconnect the inoperative horn.
  2. Connect a test lamp between terminal B and ground.
  3. Press the horn switch.

Does the test lamp light?

--

Go to Step 3

Go to Step 4

3
  1. Connect a test lamp between terminal B and A.
  2. Press the horn switch.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

4

Repair the open in CKT 29 (DK GRN).

Is the repair complete?

--

Go to Horns System Check

--

5

Replace the horn.

Is the repair complete?

--

Go to Horns System Check

--

6

Repair an open in CKT 1150 (BLK) or CKT 1550 (BLK).

Is the repair complete?

--

Go to Horns System Check

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