Schematic Reference: Instrument Cluster Schematics

Connector End View References: Master Electrical Component List

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle

Start the engine.

Does the change engine oil indicator illuminate in the instrument panel cluster (IPC)?

Go to Step 3

Go to Testing for Intermittent Conditions and Poor Connections

1. Install a scan tool.
2. With the scan tool, observe one of the following engine oil life remaining parameters:

•	Engine Oil Life Remaining parameter in the powertrain control module (PCM) Engine Data 2 data list - gas only.

•	Engine Oil Life Remaining parameter in the PCM Engine Data 1 data list - 6.6L diesel only.

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 .

Does the change engine oil indicator turn off?

Go to Step 6

Go to Step 5

Replace the IPC. Refer to Control Module References for replacement, setup, and programming.

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