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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1342 (Hybrid Energy Storage System) >> Diagnostic Information and Procedures >> DTC P1A21 >> 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 P1A21

Hybrid Battery Contactor Control Sequence Incorrect

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