Schematic Reference: Instrument Cluster Schematics

Connector End View References: Instrument Panel, Gages, and Console Connector End Views, Powertrain Control Module Connector End Views for the 4.3L engine, Powertrain Control Module Connector End Views for the 4.8L, 5.3L, and 6.0L engine or Engine Control Module Connector End Views for the 6.6L (LLY) engine

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