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of electromagnetic interference that may result from installation of aftermarket equipment Reference Information Schematic Reference Trailer Brake Control Schematics Connector End View Reference Component Connector End Views Description and Operation Trailer Brake Controls Description and Operation Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for Scan Tool Information Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Control Module References for TBCM replacement, setup, and programming DTC C056D OR C056E Diagnostic Instructions Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. Review Strategy Based Diagnosis for an overview of the diagnostic approach. Diagnostic Procedure Instructions provides an overview of each diagnostic category. DTC Descriptor
2008 Chevrolet Silverado 1500 2008 BRAKES Trailer Brake Controls - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
C056E The TBCM is not programmed. Action Taken When the DTC Sets The trailer brake control will be disabled at the end of the current brake apply for the The Service Trailer Brake System will be displayed on the Driver Information Center Conditions for Clearing the MIL/DTC When the condition for the DTC is no longer present. The TBCM automatically clears the history DTC when a current DTC is not detected in 40 Reference Information Schematic Reference Trailer Brake Control Schematics Connector End View Reference Component Connector End Views Electrical Information Reference Circuit Testing Connector Repairs Testing for Intermittent Conditions and Poor Connections Wiring Repairs Scan Tool Reference Control Module References for Scan Tool Information Circuit/System Verification Ignition ON, observe the DTC information with a scan tool. DTC C056D and DTC C056E,
2008 Chevrolet Silverado 1500 2008 BRAKES Trailer Brake Controls - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
If DTC C056D failed this ignition, replace the TBCM. If DTC C056E failed this ignition, program the TBCM. Circuit/System Testing C056E Program the TBCM. If DTC C056E sets after programming, perform the following steps: If DTC C056D is set, turn off the ignition, wait 30 seconds, turn ignition on, if DTC C056D If DTC C056E is set, turn off the ignition, wait 30 seconds, turn ignition on, if DTC C056E If DTC C056E sets after programming, replace the TBCM. Repair Procedures Perform the Diagnostic Repair Verification after completing the diagnostic procedure. Control Module References for TBCM replacement, setup, and programming DTC C0800 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 C800 03 Device Power Circuit Voltage Below Threshold DTC C800 07 Device Power Circuit Voltage Above Threshold Circuit/System Description
2008 Chevrolet Silverado 1500 2008 BRAKES Trailer Brake Controls - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
The trailer brake control module (TBCM) monitors the system voltage (ignition voltage) to make Conditions for Running the DTC The ignition is ON. The engine speed is greater than 400 RPM. Conditions for Setting the DTC C0800 03 During initialization or when the system is inactive, the system voltage is less than 10.5 During the system operation, the system voltage is less than 9.5 volts. C0800 07 Ignition is in RUN. The system voltage is greater than 17 volts. Action Taken When the DTC Sets The trailer brake control will be disabled at the end of the current brake apply for the The Service Trailer Brake System will be displayed on the Driver Information Center Conditions for Clearing the MIL/DTC When the condition for the DTC is no longer present. The TBCM automatically clears the history DTC when a current DTC is not detected in 40 Reference Information Schematic Reference Trailer Brake Control Schematics
2008 Chevrolet Silverado 1500 2008 BRAKES Trailer Brake Controls - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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