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Home >> Cadillac >> 2007 >> Escalade EXT >> Repair and Diagnosis >> External Pages >> Different car >> Section 1390 (Trailer Brake Control System) >> Diagnostic Information and Procedures >> DTC C0800 >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Engine running, observe the scan tool TBCM Battery Voltage Signal parameter. The reading should be between 12.6 and 15.0 volts.

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