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system and where the procedure is located. DTC B3894 Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provide an overview of each diagnostic category. DTC Descriptor DTC B3894 5A Stop Lamp Switch Circuit Plausibility Failure Circuit/System Description The TCC Brake Switch signal hard wired to the TBCM is normally open and closes to battery Conditions for Running the DTC The system voltage is in the range of 9.5-17 volts. The module initialization has taken place. The master cylinder brake pressure exceeds threshold Conditions for Setting the DTC The actual brake switch input to the TBCM, and the serial data information for the brake switch Action Taken When the DTC Sets The trailer brake control will be disabled for the remainder of the ignition cycle. Service Trailer Brake System, will be displayed on the driver information center (DIC).
2008 Chevrolet Silverado 1500 2008 BRAKES Trailer Brake Controls - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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