GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

  1. Turn the ignition switch to the RUN position.
  2. Activate the inoperative turn signal.

Do the exterior turn lamps flash?

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Go to Step 2

Go to Exterior Lights System Check in Lighting Systems

2

Does the high beam indicator work with the high beams on?

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Go to Step 3

Go to Instrument Cluster Illumination Lamps Inoperative

3

Check for a poor connection or open in the following circuits:

    • (LH) circuit 18 between the instrument cluster harness connector C2 terminal P and S233.
    • (RH) circuit 19 between the instrument cluster harness connector C2 terminal R and S232.

Is there a poor connection or open?

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Go to Step 4

Go to Step 5

4

Repair the poor connection or open in the following circuits:

    • (LH) circuit 18 between the instrument cluster harness connector C2 terminal P and S233.
    • (RH) circuit 19 between the instrument cluster harness connector C2 terminal R and S232.

Has the repair been made and the system rechecked?

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System OK

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5

  1. Check the warning indicator bulb and bulb connection.
  2. If OK, replace the instrument cluster. Refer to Instrument Cluster Replacement in Instrument Panel, Gauges and Console.

Has the repair been made and the system rechecked?

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System OK

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