Chevrolet Silverado / GMC Sierra. Manual - part 711
Scan Tool Reference
Control Module References for Scan Tool Information
Circuit/System Testing
1. Apply and release brake pedal. Verify brake lamps operate properly.
If brake lamps do not operate properly, refer to Symptoms - Lighting
2. Replace EBCM/brake pressure modulator valve (BPMV) assembly.
Repair Procedures
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Brake Pressure Modulator Valve Replacement (JD9, JF3, JF7) or Brake Pressure
Modulator Valve Replacement (JH6, JH7)
Electronic Brake Control Module Replacement (JH6, JH7) or Electronic Brake
Control Module Replacement (JD9, JF3, JF7)
Control Module References for EBCM replacement, setup, and programming
DTC C0161
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
DTC C0161 00
ABS/TCS Brake Switch Circuit
DTC C0161 5A
ABS/TCS Brake Switch Plausibility Failure
Circuit/System Description
The EBCM receives a serial data message from BCM that the brake pedal is applied and to
2008 Chevrolet Silverado 1500
2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
ensure that the states of their feedback circuits agree.
Conditions for Running the DTC
The ignition is ON.
The vehicle speed is greater than 16 km/h (10 mph).
The ignition voltage is greater than 9.5 volts.
Conditions for Setting the DTC
The brake pedal is sensed as applied for 6 minutes.
The vehicle speed is greater than 21 km/h (13 mph).
Action Taken When the DTC Sets
The ABS/TCS/VSES if equipped, remains functional.
Conditions for Clearing the DTC
The condition for the DTC is no longer present.
The EBCM automatically clears the history DTC when a current DTC is not detected in 100
consecutive drive cycles.
Diagnostic Aids
The DTC C0161 00 can be set if the brake switch is applied while accelerating.
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
ABS Description and Operation (With JL4) or ABS Description and Operation (Without
JL4)
2008 Chevrolet Silverado 1500
2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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
With the ignition ON, use a scan tool to display DTCs for the body control module (BCM).
If DTC C0277 is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle .
If no DTCs are present, go to Diagnostic Aids.
Repair Verification
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
DTC C0186
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 Descriptors
DTC C0186 00
Lateral Accelerometer Circuit
DTC C0186 5A
Lateral Accelerometer Circuit Plausibility Failure
Diagnostic Fault Information
2008 Chevrolet Silverado 1500
2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Circuit/System Description
The lateral accelerometer and the yaw rate sensors are combined into one sensor external to the
electronic brake control module (EBCM). The vehicle stability enhancement system (VSES) uses
the lateral accelerometer input when calculating the desired yaw rate.
Conditions for Running the DTC
The ignition switch is in the ON position.
Conditions for Setting the DTC
The yaw/lateral combination sensor fails an internal self test.
Communication is lost between the EBCM and the yaw/lateral combination sensor.
Action Taken When the DTC Sets
One or more of the following actions may occur:
The vehicle stability enhancement system (VSES) is disabled.
Traction control system (TCS) is disabled.
The TCS/VSES indicators turn ON.
The driver information center (DIC) displays the Service Traction Control, and or Service
StabiliTrak message.
Conditions for Clearing the DTC
The condition for the DTC is no longer present.
The EBCM automatically clears the history DTC when a current DTC is not detected in 100
Circuit
Short to
Ground
Open/High
Resistance
Short to
Voltage
Signal
Performance
Lateral Accelerometer Supply
Voltage Circuit
C0186 00
C0186 00
-
-
Lateral Accelerometer
Communication High Circuit
C0186 00
C0186 00
C0186 00
C0186 5A
Lateral Accelerometer
Communication Low Circuit
C0186 00
C0186 00
C0186 00
C0186 5A
Lateral Accelerometer
Communication Ground Circuit
-
C0186 00
-
-
2008 Chevrolet Silverado 1500
2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado