Skip the auto shop - Our mechanics make house calls

Q: ABS light on

asked by on

The ABS light is on, and I just had the wheel speed sensors replaced.

There is a technical service bulletin (TSB) GM has put out concerning a bad ground to the electronic brake controller module or EBCM. This causes a loss of communication and sets the ABS light. There are fault codes associated with this condition so fault codes should be read out.

If the reading out of the fault codes match the ones specified in the bulletin, then the ground for the EBCM on the underside of the frame should be cleaned and reconnected. You may want to enlist the help of a mechanic, such as one from YourMechanic, who will have the equipment and training to diagnose your ABS light and carry out the necessary repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Need help diagnosing steering problem after hitting a curb.

It sounds as though you may have bent a tie rod. The tie rods are the links between the steering and the wheels, and they are normally pretty tough, but a good solid whack can bend them. Additionally, the new...

Q: Car won't start - 2012 Land Rover LR4

Hey there. Land Rover has a TSB out for a keyless module that may malfunction. Of the "Smart Key Not Found" message that will occur on the dash. This repair would require the module to be replaced and programmed at...

Q: coughs when accelerating or going up hills while in gear.

Hi there. Typically when an engine "coughs" it is due to a cylinder misfire. This could be caused by one of several ignition system components or fuel system components that are not working efficiently due to simply being dirty or...

Related articles

How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...