GM Service Manual Online
For 1990-2009 cars only

Step

Action

Values

Yes

No

1

Did you perform the Instrument Cluster System Check?

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Go to Step 2

Go to Instrument Cluster System Check

2

  1. Disconnect the seat belt switch.
  2. Turn ON the ignition, leaving the engine OFF.

Is the Fasten Seat Belt lamp illuminated?

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Go to Step 3

Go to Step 4

3

Replace the seat belt switch.

Did you complete the replacement?

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Go to Step 5

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4

Test the seat belt switch signal circuit for a short to ground (CKTs XF20 and XF21). Refer to Testing for Short to Ground in Wiring Systems.

Did you find and correct the condition?

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Go to Step 5

Go to Step 6

5

Verify the operation of the Fasten Seat Belt lamp.

Is the Fasten Seat Belt lamp operating properly?

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System OK

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6

  1. Remove the instrument panel cluster. Refer to Instrument Cluster Replacement .
  2. Remove and inspect the Fasten Seat Belt indicator bulb, located in the gauge cluster, for an open.

Did you find and correct the condition?

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Go to Step 5

Go to Step 7

7

Replace the gauge cluster.

Did you complete the replacement?

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Go to Step 8

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8

Test the gauge cluster functions.

Do all gauge cluster functions operate properly?

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System OK

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