Schematic Reference: Instrument Cluster Schematics

1

Did you perform the Instrument Cluster Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

Start the engine.

Does the CHANGE OIL SOON indicator illuminate in the DIC?

Go to Step 3

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

1. Install a scan tool.
2. With a scan tool, observe the Engine Oil Life parameter in the PCM Engine Data 2 data list.

Does the Engine Oil Life parameter display 0%?

Go to Step 4

Go to Step 5

Reset the engine oil life. Refer to GM Oil Life System Resetting in Maintenance and Lubrication.

Does the CHANGE OIL SOON indicator turn off?

Go to Step 6

Go to Step 5

Replace the IPC. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

Go to Step 6

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2