Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
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The brake system will operate as a vehicle that does not have antilock brakes. It is safe to drive as long as you are aware of this and allow for it when you are stopping. This may cause some longer stopping distances depending on road conditions.
Wheel speed sensor codes usually do not require a BPMV to be replaced. The BPMV is the brake pressure modulator valve. It has nothing to do with wheel speed sensors.
The EBCM is the electronic brake control module. It reads the wheel speed sensor input to adjust the BPMV solenoids to control the brakes if they lock up.
Usually the wheel speed sensor issues are due to the sensors them selfs, or the wiring from the sensor to the EBCM.
With out the diagnostic codes that were set and knowing what kind of testing was performed and the results of those test. I can not say why they would want to replace both components, unless they are making an educated guess, because the concern is not present while they are testing it.
If you have new information to this concern please let me know. You can ask follow up questions if needed.
No problem. Items that can turn the ABS /traction control lamps on other than the modules are. #1 any wheel speed sensor or circuit wiring. Data communication circuits, brake fluid level, power and ground to the EBCM.
Here are the trouble codes that can set for ABS concerns.
All of these codes deal with a circuit in the ABS system. SO knowing which code is set is critical for diagnosis.
If a repair shop will not give you the code,and WHY the component needs replaced. Find another repair shop! This is what you are paying the diagnostics fee for. Example: This is the code that set C000 . it has set due to a faulty connection at the wheel speed sensor. Replacing the wheel speed sensor is the only way to get the connector. ( Or) the EBCM has set a code C000 for an internal fault. replaceing the EBCM is the only way to repair this code because there is no way for us to repaire the internal circuit.
If they diagnose the concern, and find the root cause for the concern, you as the paying customer have the right to ask WHY this component needs replaced. If they can't tell you with confidence, or are unsure why, they are guessing. These components are Expensive, do not throw parts at this problem on a hunch. Propper diagnostics can find the cause , and if they can not find the cause, who ever performs your diagnostics should at least be up front and tell you that this is an educated guess based on XYZ. So the ultimate decision is yours with the properer information as to what is going on with your vehicle.
After you get the trouble codes, feel free to let me know and I will look them up and give you the possibilities that could be the cause.
The links to the codes will not work for you through this sight. If you can get me the codes number I will get you the description and diagnostics associated with the code.
I just included the code numbers to show you how many different codes were on this system that can cause a concern.
Again feel free to run the diagnostic you receive from the repair shop by me if you need to to be able to make an informed decision.