GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Connect a scan tool.
  2. Read the right turn signal input.
  3. Activate the turn signal switch to the right turn position.

Does the data screen change from OFF to ON?

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Go to Step 2

Go to Diagnostic System Check - Lighting Systems

2

  1. Remove the instrument cluster.
  2. Inspect the instrument panel cluster connector and the right turn signal indicator bulb for an open circuit or loose connection.

Is the instrument panel cluster connector and the right turn signal indicator bulb in normal condition?

--

Go to Step 3

Go to Step 4

3

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

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4

Repair the instrument panel cluster connector or replace the right turn signal indicator bulb. Refer to Instrument Cluster Bulb Replacement .

Is the repair complete?

--

System OK

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