Antilock Brake System (ABS), Traction Control System (TCS) or StabiliTrak Light On, DTCs C0035-C0052 Set (Perform Diagnostic Componetn Test Procedure and Repair as Necessary)
| Subject: | Antilock Brake System (ABS), Traction Control System (TCS) or StabiliTrak® Light On, DTCs C0035-C0052 Set (Perform Diagnostic Component Test Procedure and Repair as Necessary) |
| Models: | 2007-2009 Buick Allure, Lacrosse, Lucerne |
| 2007-2008 Cadillac XLR |
| 2007-2009 Cadillac DTS, SRX, and STS |
| 2007-2008 Chevrolet Corvette |
| 2007-2009 Chevrolet Impala, Uplander, and Uplander EXT |
| 2007-2008 Pontiac Grand Prix |
| 2007-2009 Pontiac Montana SV6, and Montana SV6 EXT |
Condition
Some customers may comment that the Antilock Brake System (ABS), Traction Control System (TCS) or StabiliTrak® (if equipped) warning lights are illuminated. Upon investigation, one or more of the following DTCs may be in history or current.
DTC | Location |
|---|---|
C0035 | Left Front Wheel Speed Sensor Circuit |
C0036 | Left Front Wheel Speed Sensor Circuit Range/Performance |
C0037 | Left Front Wheel Speed Sensor Circuit Low |
C0040 | Right Front Wheel Speed Sensor Circuit |
C0041 | Right Front Wheel Speed Sensor Circuit Range/Performance |
C0042 | Right Front Wheel Speed Sensor Circuit Low |
C0045 | Left Rear Wheel Speed Sensor Circuit |
C0046 | Left Rear Wheel Speed Sensor Circuit Range/Performance |
C0047 | Left Rear Wheel Speed Sensor Circuit Low |
C0050 | Right Rear Wheel Speed Sensor Circuit |
C0051 | Right Rear Wheel Speed Sensor Circuit Range/Performance |
C0052 | Right Rear Wheel Speed Sensor Circuit Low |
Correction
Do This | Don't Do This |
|---|---|
Properly diagnose the wheel speed sensor. | Do not replace the EBCM or any other component(s) without first diagnosing. |
Begin diagnostics with the component test procedure listed below. If the cause is not found, proceed to the Circuit/System Testing on the applicable Diagnostic Information and Procedures document for the vehicle you are working on. SI Diagnostic Information and Procedures are being revised to reflect this change in strategy.
- With the ignition OFF, disconnect the harness connector at the appropriate wheel speed sensor.
- Test for 850-1350 ohms between the signal terminal A and the low reference signal terminal B. During the test, check for an intermittent circuit condition by gently moving the wheel speed sensor pigtail harness.
- Test for infinite resistance between each terminal and the steering knuckle. Reverse the test leads, test for infinite resistance between each terminal and the steering knuckle again.
- Spin the wheel while monitoring the voltage between the signal terminal A and the low reference terminal B. The voltage should be greater than 100 mV AC.
If not within the specified range, replace the wheel speed sensor.
If less than the specified value, replace the appropriate wheel speed sensor.
If less than the specified range, replace the wheel speed sensor.
Warranty Information
For vehicles repaired under warranty, use the applicable bearing and hub assembly published labor code.
