Schematic Reference: Instrument Cluster Schematics

1

Did you perform the Diagnostic System Check - Vehicle?

Go to Step 2

Go to Diagnostic System Check - Vehicle in Vehicle DTC Information

Start the engine.

Does the CHANGE ENGINE OIL message illuminate in the radio?

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 engine control module (ECM) Engine Data 3 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 ENGINE OIL message turn OFF?

Go to Step 6

Go to Step 5

Replace the radio. Refer to Control Module References in Computer/Integrating Systems 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