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Home >> GMC >> 2006 >> Sierra 1500 HD, RWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1555 (Battery, Charging System And Starting System - Non-Hybrid) >> Diagnostic Information and Procedures >> DTC C0800 >> Circuit/System Description

Circuit/System Description

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

The trailer brake control module (TBCM) monitors the 12V system voltage to make sure that the voltage stays within the proper range. Damage to components, and incorrect data can occur when the voltage is out of range. The TBCM monitors the system voltage. If the TBCM detects a 12V system voltage outside an expected range, DTC C0800 will set.

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