GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Instrument Cluster Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

Did you perform the PCM Diagnostic System Check?

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Go to Step 3

Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.1L or Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.8L

3

  1. Install a scan tool.
  2. Turn the ignition switch to the RUN position.
  3. Establish communication with the instrument cluster.
  4. WOW the cluster ON.

Is the low fuel indicator lamp illuminated?

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Go to Step 4

Go to Step 5

4

  1. Turn the ignition switch to the RUN position.
  2. Using a scan tool, observe the low fuel indicator lamp input.

Does the low fuel lamp read on with ¼ tank or less of fuel and the fuel indicator inoperative?

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Go to Step 5

Go to Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.1L or Powertrain On Board Diagnostic (OBD) System Check in Engine Controls - 3.8L

5

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Is the repair complete?

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System OK

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