Diagnostic Aids
WARNING: This page is about a different car, the 2010 GMC Sierra and 2010 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect the back of the wheel bearing on the encoder surface for metal debris that could cause an erratic reading with the sensor. Do not use a magnet to clean the debris, or damage to the encoder ring may occur.
- If 2 or more wheel speed sensors are inoperative diagnose each wheel speed sensor individually.
- An ECE 13 response may be required, after repairs are made, and DTCs are cleared, operate the vehicle at speeds greater than 15 km/h (10 mph) to complete the self test, and the EBCM will turn off the ABS indicator.
If the customer comments that the ABS indicator is ON only during moist environmental conditions: rain, snow, vehicle wash, inspect the wheel speed sensor wiring for signs of water intrusion.