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

  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 C4 with a test lamp from cavity 9 to ground.

Does the test lamp flash?

--

Go to Step 3

Go to Step 5

3

Test for an open in the GRN/YEL wire between the junction block and the IP cluster assembly.

Was an open found?

--

Go to Step 6

Go to Step 4

4

Repair or replace the IP cluster printed circuit.

Is the repair complete?

--

Go to Exterior Lights System Check

--

5

Replace the junction block.

Is the repair complete?

--

Go to Exterior Lights System Check

--

6

Repair the open. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

--

Go to Exterior Lights System Check

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