Express 4500 V8-6.0L (2010)
‹› If the MIL does not illuminate, test the MIL control circuit for a short to voltage or an open/high resistance. If the MIL control circuit tests
normal, test the instrument cluster ignition circuit for a short to ground or an open/high resistance. If the circuits test normal, replace the
instrument panel cluster/bulb.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Diagnostic Trouble
Code Tests and Associated Procedures/Verification Tests and Procedures) after completing the diagnostic procedure.
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Instrument Cluster Replacement (See: Compass/Service and Repair/Instrument Cluster Replacement)
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Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming