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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1348 (Transfer Case - Mp 3023/3024-NQH) >> Diagnostic Information and Procedures >> DTC C0550 >> DTC Descriptor

DTC Descriptor

WARNING: This page is about a different car, the 2009 GMC Sierra and 2009 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC C0550 37

Electronic Control Unit Malfunction Watchdog/Safety Failure

DTC C0550 39

Electronic Control Unit Malfunction Internal Electronic Failure

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