Did you perform the Instrument Cluster System Check?

--

Go to Step 2

Go to Diagnostic System Check - Instrument Cluster

Test the vehicle for Diagnostic Trouble Codes (DTCs).

Are any DTCs present?

--

Go to Diagnostic Trouble Code (DTC) List (RPO 3.1L) or Engine Scan Tool Data List (RPO 3.8L) in Engine Controls

Go to Step 3

1. Turn the ignition switch to the ON position.
2. Connect a scan tool and enter into Instrument Cluster diagnostics.
3. Turn ON WOW to Instrument Cluster.

Is the SERVICE ENGINE SOON indicator on?

--

Go to Powertrain On Board Diagnostic (OBD) System Check (RPO 3.1L) or Powertrain On Board Diagnostic (OBD) System Check (RPO 3.8L) in Engine Controls

Go to Step 4

Replace the instrument cluster. Refer to Instrument Cluster Replacement .

Did you complete the repair and test the system?

--

Go to Diagnostic System Check - Instrument Cluster

--