Chevrolet Silverado / GMC Sierra. Manual - part 710
Connector End View Reference
Component Connector End Views
Description and Operation
ABS Description and Operation (With JL4) or ABS Description and Operation (Without
JL4)
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 Testing
1. Ignition OFF, disconnect the EBCM harness connector and connect a test lamp between the
battery positive voltage circuit terminal going to the ABS pump motor, and to ground.
2. Ignition ON, verify that the test lamp illuminates.
If the test lamp does not illuminate, repair the open or high resistance in the battery
positive voltage circuit.
3. Connect a test lamp between the battery positive voltage circuit and pump motor ground
circuit at the EBCM connector, verify that the test lamp illuminates.
If the test lamp does not illuminate, repair the open or high resistance in the pump
motor ground circuit.
4. Ignition OFF, remove the EBCM from the BPMV.
5. Inspect the EBCM to BPMV connector for conditions such as damage, corrosion, or
presence of brake fluid.
If connector corrosion or damage is evident, replace BPMV and/or EBCM as
necessary.
If brake fluid is present, replace both BPMV and EBCM.
6. Connect the EBCM harness to the EBCM with the BPMV still separated.
2008 Chevrolet Silverado 1500
2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
7. Connect a test lamp between the pump motor circuits, internal EBCM side.
8. Ignition ON, use the scan tool to perform the Pump Motor Test.
If test lamp illuminates replace the BPMV.
If test lamp does not illuminate replace the EBCM.
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)
Control Module References for EBCM replacement, setup, and programming
DTC C0131
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 C0131 00
ABS/TCS System Pressure Circuit Malfunction
DTC C0131 3A
ABS/TCS Pressure Sensor Incorrect Component Installed
DTC C0131 5A
ABS/TCS Pressure Circuit Plausibility Failure
DTC C0131 01
ABS Pressure Circuit Short to Battery
DTC C0131 03
2008 Chevrolet Silverado 1500
2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
ABS/TCS Pressure Circuit Voltage Below Threshold
DTC C0131 06
ABS/TCS Pressure Circuit Short to Ground or Open
DTC C0131 55
ABS/TCS Pressure Sensor Expected Number of Transitions or Events not Reached
DTC C0131 0F
ABS/TCS Pressure Sensor Erratic
DTC C0131 4B
ABS/TCS Pressure Sensor Calibration not Learned
Diagnostic Fault Information
Circuit/System Description
The electronic brake control module (EBCM) uses input from the brake pressure sensor for more
accurate control during a vehicle stability enhancement system (VSES) event.
Conditions for Running the DTC
The ignition switch is in the ON position.
Ignition voltage is greater than 9.5 volts.
Conditions for Setting the DTC
Internal pressure sensor line fault.
Pressure signal does not correlate to estimated Pressure over time.
Brake Signal does not correlate to Pressure Signal.
Signal is erratic and changes faster than physically allowed.
Circuit
Short to
Ground
Open/High
Resistance
Short to
Voltage
Signal
Performance
Brake Pressure Sensor Signal
Circuit
C0131 03
C0131 00
C0131 01
C0131 3A,
5A, OF, 4B
2008 Chevrolet Silverado 1500
2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Action Taken When the DTC Sets
The EBCM disables the antilock brake system (ABS)/traction control system/(TCS) and
vehicle stability enhancement system/(VSES) for the duration of the ignition cycle.
The ABS/TCS and stabilitrak indicator turns ON.
The Service Traction Control, and stabilitrak displayed on the DIC.
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 brake fluid pressure sensor is integral to the BPMV/EBCM. The brake fluid pressure sensor
is not serviceable. After replacing a BPMV and the DTC resets as a current code, it may be
necessary to perform a brake pressure sensor calibration with the Tech 2 in ABS, special
function.
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)
Electrical Information Reference
Circuit Testing
Connector Repairs
Testing for Intermittent Conditions and Poor Connections
Wiring Repairs
2008 Chevrolet Silverado 1500
2008 BRAKES Antilock Brake System - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado