GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

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:

    • (Left) CKT 18 between the instrument cluster harness connector C2 terminal P and S233.
    • (Right) CKT 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:

    • (Left) CKT 18 between the instrument cluster harness connector C2 terminal P and S233.
    • (Right) CKT 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 .

Has the repair been made and the system rechecked?

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System OK

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