Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
THE ABS Light or traction control comes on when there is a fault in the abs system. When the light is on the abs system is not working..A diagnostic scanner - computer would be required to pull the trouble code and to diagnose./.The failed component would need to be repaired or replaced to get the light to go out. likley you have a wheel speed sensor or wiring issue to a sensorif you can get me the trouble code we can figure out whats going on
DTC C0035 or C0040Circuit DescriptionAs the wheels spin, each wheel speed sensor produces an AC signal. The electronic brake control module (EBCM) uses the frequency of the AC signals to calculate each wheel speed.Conditions for Running the DTC
Conditions for Setting the DTCAny of the following conditions may cause the DTC to set.
Action Taken When the DTC Sets
Conditions for Clearing the DTCThe Conditions for Setting the DTC are no longer present and you use the scan tool Clear DTCs function.Diagnostic AidsThoroughly inspect connections or circuitry that may cause an intermittent malfunction. Refer to Testing for Intermittent Conditions and Poor Connections , Connector Repairs, Testing for Electrical Intermittents and to Wiring Repairs.If the customer's concern is that the ABS indicator is on only during humid conditions such as rain, snow or vehicle wash, thoroughly inspect the wheel speed sensor circuits for signs of water intrusion. Use the following procedure in order to help isolate the problem area:
Repair or replace the suspect harness if the DTC sets.
Antilock Brake SystemDiagnostic Information and ProceduresDTC C0455Circuit DescriptionThe electronic brake control module (EBCM) receives several inputs from the steering wheel position sensor. 3 digital square wave signal inputs are wired directly to the EBCM harness connector; however, only signals A and B are used or monitored. The failure of the index pulse signal does not affect VSES function. The body control module (BCM), which receives an analog steering position sensor input, transmits steering position data on the serial data line.The EBCM monitors the serial data information as an added fail-safe for the steering position sensor circuitry. Battery voltage is supplied to the digital portion of the steering wheel position sensor from the cruise control fuse. The analog portion of the steering wheel position sensor is supplied a 5.0-volt reference from the BCM. This circuit is also used for a lamp dimming function.Conditions for Running the DTC
Conditions for Clearing the DTCThe condition for setting the DTC is no longer present and you use the scan tool Clear DTC's function.Diagnostic Aids
Test DescriptionThe number below refers to the step number on the diagnostic table.
exactly and rotate the tire
tractive action is likely the steering angle sensor and yes up and down is either ball joint or hub and likely a loose outer tie rod........................
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just make sure you have it aligned when done... Did you order the steering angle sensor also?
an alignment machine to set the sensor and a Tools Required