Silverado 2500 4WD V8-6.6L DSL Turbo (2010)
tests normal and the ignition circuit fuse is open, replace the IPC.
2. Ignition OFF, disconnect the ECM X2 harness connector. Ignition ON, the MIL should not illuminate.
‹› If the MIL is illuminated, test the MIL control circuit terminal X2-30 for a short to ground. If the circuit tests normal, replace the IPC.
3. Ignition ON, connect a 3A fused jumper wire between the MIL control circuit terminal X2-30 and ground. The MIL should illuminate.
‹› If the MIL does not illuminate, test the MIL control circuit for a short to voltage, or an open/high resistance. If the circuit tests normal, replace
the IPC/bulb.
4. If all circuits/connectors test normal, replace the ECM.
Repair Instructions
Perform the Diagnostic Repair Verification (See: 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 (Without RPO SLT) (See: Instrument Panel, Gauges and Warning Indicators/Instrument Cluster /
Carrier/Service and Repair/Instrument Cluster Replacement (Without RPO SLT))Instrument Cluster Replacement (With RPO SLT) (See:
Instrument Panel, Gauges and Warning Indicators/Instrument Cluster / Carrier/Service and Repair/Instrument Cluster Replacement (With RPO
SLT))
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Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM and ICM replacement, setup, and programming
