GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Remove the horn relay.

Does the horn continue to sound?

--

Go to Step 2

Go to Step 3

2

Repair the short to B+ in CKT 29, between the convenience center and the horn. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Horns System Check

--

3

  1. Disconnect the turn/hazard headlamp switch assembly connector C2.
  2. Connect a test lamp between terminal H of the turn/hazard headlamp switch assembly connector C2 and B+.

Does the test lamp light?

--

Go to Step 4

Go to Step 5

4

Replace the turn/hazard headlamp switch assembly.

Is the repair complete?

--

Go to Horns System Check

--

5

Connect a test lamp between terminal H of the turn/hazard headlamp switch assembly harness connector C2 and B+.

Does the test lamp light?

--

Go to Step 6

--

6

Repair the short to the ground in CKT 28, between the convenience center and the turn/hazard headlamp switch assembly. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Horns System Check

--