GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Was the BCM Diagnostic System Check performed?

--

Go to Step 2

Go to Diagnostic System Check - Body Control System in Body Control System

2

Was the Instrument Cluster Diagnostic System Check performed?

--

Go to Step 3

Go to Diagnostic System Check - Instrument Cluster

3

  1. Connect a scan tool.
  2. Turn the ignition key to the ON position.
  3. WOW the instrument cluster ON.

Does the safety belt indicator illuminate?

--

Go to Step 4

Go to Step 6

4

  1. Connect a scan tool.
  2. Turn the ignition key to the ON position.
  3. Read the input of the safety belt indicator.
  4. Connect and disconnect the seat belt.
  5. Observe the cluster seat belt indicator.

Does the seat belt lamp turn off and on as the seat belt switch is connected and disconnected?

--

System OK

Go to Step 5

5

The fasten belts indicator lamp turns on with the driver's seat belt fastened due to a malfunction between the BCM and the driver's seat belt switch. Refer to Fasten Safety Belt Chime Always On .

Is the action complete?

--

System OK

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6

Replace the instrument panel cluster . Refer to Instrument Cluster Replacement .

Is the repair complete?

--

System OK

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