Schematic Reference: Instrument Cluster Schematics

Did you perform the IPC Diagnostic System Check?

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe the engine oil life percent in the PCM data 3 list.

Does the scan tool display zero percent with the change engine oil message on?

Go to Step 3

Go to Step 4

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

Has the GM engine oil life system been reset?

Go to Step 5

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Replace the IPC. Refer to Instrument Cluster Replacement .

Did you complete the replacement?

Go to Step 5

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1. Install a scan tool.
2. Turn ON the ignition, with the engine OFF.
3. With a scan tool, observe the Engine Oil Life percent in PCM data 3 list.

Does the scan tool display 100 percent with the engine oil message off?

System OK

Go to Diagnostic System Check - Engine Controls in Engine Controls