GM Service Manual Online
For 1990-2009 cars only

Step

Action

Value(s)

Yes

No

1

Did you perform the Diagnostic System Check?

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Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

2

Start the vehicle.

Does the CHECK GAGES indicator illuminate during the bulb test?

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Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems

Go to Step 3

3

  1. Connect a scan tool to the vehicle data link connector (DLC).
  2. Enter the instrument cluster WOW mode.
  3. Command the instrument cluster indicators on.

Does the CHECK GAGES indicator turn on?

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Go to Powertrain On Board Diagnostic (OBD) System Check (3.8L) or Powertrain On Board Diagnostic (OBD) System Check (5.7L)

Go to Step 4

4

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

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Go to Step 5

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5

Operate the system in order to verify the repair.

Did you correct the condition?

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System OK

Go to Step 3