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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 914 (Transfer Case - Mp 3023-NQH) >> Diagnostic Information and Procedures >> DTC C0321 >> Diagnostic Aids

Diagnostic Aids

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

When the circuits operating the lock solenoid are not complete the lock is engaged. When the circuit is completed the lock is disengaged.