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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1606 (Transfer Case - Mp 3023/3024-NQH) >> Diagnostic Information and Procedures >> DTC C0550 >> DTC Descriptors

DTC Descriptors

WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
DTC C0550 37

Electronic Control Unit (ECU) Performance Watchdog Failure

DTC C0550 39

Electronic Control Unit (ECU) Internal Electronic Failure

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