Brakes - ABS Lamp ON/DTC's C0030/C0040/C0045/C0050
Bulletin No.: 07-05-25-004Date: November 14, 2007
TECHNICAL
Subject:
Antilock Brake System (ABS) Light On, Electronic Stability Control (ESC)/Traction Control System (TCS) Light On, Service ESC Message in DIC, DTCs C0030, C0040, C0045, C0050 Set (Reprogram Electronic Brake Control Module (EBCM))
Models:
2008 Pontiac G6
Built Prior to October 12, 2007 (with RPO NW9) or October 25, 2007 (with RPO FX3)
2008 Saturn AURA
Built Prior to October 8, 2007
Attention:
Use GMVIS to determine the build date and RPO.
Condition
Some customers may comment about the following conditions:
Antilock Brake System (ABS) Warning Light On
Electronic Stability Control (ESC)/Traction Control System (TCS) Warning Light On
Service ESC (Electronic Stability Control) Message Displayed in DIC
A scan tool may reveal one or more of the following DTCs:
C0035
C0040
C0045
C0050
All DTCs will have a symptom code of 00.
Cause
The cause of this condition may be the wheel speed sensor diagnostic thresholds in the EBCM are too tight for the current wheel speed sensors.
Correction
When reading the DTCs in the Tech 2(R), pull up the "Enhanced DTC Data" (refer to the steps below). For the above listed diagnostic codes, look for the line titled "DTC Sub Code" and make note of the characters to the right (refer to the graphic). If the sub code listed is either 04, 05, 06, or 07, then reprogram the EBCM with updated calibration files using the TIS2WEB Service Programming System (SPS) application. Both the operating system and electronic brake calibrations must be installed for a complete repair.
If the sub code is not 04, 05, 06, or 07, then this bulletin does not apply, refer to the appropriate DTC information in SI.
After installing software, road test the vehicle and verify that the ESC/TCS and ABS light go off while driving and codes are able to be cleared. If the code test had not passed prior to the last time the ignition was turned off, the code will still be active upon key up and will not clear until it is determined the fault is no longer present. In this case vehicle speed will be required.
Accessing Enhanced DTC Data Procedure
To get to the Enhanced DTC Data, the following steps need to performed:
Build the vehicle.
Select "Chassis."
Select "Electronic Brake Control Module."
Select "Diagnostic Trouble Codes."
Select "Additional DTC Information."
Select "Enhanced DTC Data."
Scroll to the correct DTC.
Warranty Information
For vehicles repaired warranty, use the table.
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