GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the Exterior Lights System Check performed?

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Go to Step 2

Go to Exterior Lights System Check

2

  1. Disconnect connector C200 at the steering column.
  2. Disconnect at the connector at the instrument cluster.
  3. Connect a J 39200 DMM between the instrument cluster connector, cavity B1 for CKT 150 (BLK), and ground.

Is continuity present?

--

Go to Step 3

Go to Step 5

3

  1. Inspect the turn indicator bulbs.
  2. Replace the turn indicator bulbs, as necessary.

Are the turn signal indicators operative?

--

Go to Exterior Lights System Check

Go to Step 4

4

Replace the instrument cluster.

Are the turn signal indicators operative?

--

Go to Exterior Lights System Check

Go to Step 5

5

Repair the open in CKT 150 (BLK) between ground G201 and the instrument cluster.

Are the turn signal indicators operative?

--

Go to Exterior Lights System Check

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