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 IPC data 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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Important: Perform the set up procedure for the replacement IPC.

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 IPC data 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