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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 911 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC P1630 >> Circuit/System Description

Circuit/System Description

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 replacing a body control module (BCM), the engine control module/powertrain control (ECM/PCM) must learn the new fuel enable password from the replacement BCM. If the ECM/PCM is replaced with a service replacement part, it is in a functional state to automatically learn the vehicle fuel continue password. If the BCM is replaced, the ECM/PCM must be placed in learn mode so it can learn the new BCM password. This DTC indicates the ECM/PCM is in a functional state to learn the BCM fuel enable password.

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