GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Remove the horn relay.

Do the horns continue to sound?

--

Go to Step 2

Go to Step 3

2

Repair the short to B + in CKT 29 (DK GRN) .

Is the repair complete?

--

System OK

--

3

Connect a test light from the horn relay connector cavity 86 to B +.

Did the test light illuminate?

--

Go to Step 4

Go to Step 5

4

  1. Disconnect the turn signal switch harness connector at the base of the steering column.
  2. Connect a test light from cavity G (column side of connector), to B +.

Did the test light illuminate?

--

Go to Step 6

Go to Step 7

5

Replace the horn relay.

Is the repair complete?

--

System OK

--

6

Replace the horn switch.

Go to Horn Switch Replacement - On Vehicle in Steering Wheel and Column - Tilt.

Is the repair complete?

--

System OK

--

7

Repair the short to ground in CKT 28 (BLK) between the horn relay connector cavity 86 and the turn signal switch connector.

Is the repair complete?

--

System OK

--