GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Exterior Lights System Check performed?

--

Go to Step 2

Go to Exterior Lights System Check

2

Are the right side turn signal lamps inoperative?

--

Go to Step 3

Go to Step 4

3

  1. Turn the ignition switch to the ON position.
  2. Move the turn signal switch to the RIGHT turn position.
  3. Backprobe the junction block connector C3 with a test lamp from cavity 1 to ground.

Does the test lamp light?

--

Go to Step 5

Go to Step 6

4

  1. Turn the ignition switch to the ON position.
  2. Move the turn signal switch to the LEFT turn position.
  3. Backprobe the junction block connector C3 with a test lamp from cavity 2 to ground .

Does the test lamp light?

--

Go to Step 5

Go to Step 6

5

Replace the junction block.

Is the repair complete?

--

Go to Exterior Lights System Check

--

6

Replace the combination switch. Refer to Inflatable Restraint Steering Wheel Module Coil Replacement in SIR.

Is the repair complete?

--

Go to Exterior Lights System Check

--