Chevrolet Repair Questions? Ask a Chevy Mechanic for Answers ASAP
Welcome. This is usually a fault with one of the front wheel speed sensors or the harness that goes from the body to the harness. The wires tend to break at the pivot point around the lower ball joint.
The first thing to do is lift and check the wheel bearings because the sensor is part of the front wheel bearings. If they are good, then test the resistance of the wheel bearings. They should be around 1000 ohms. If they are good, then you need to get the code to decide which code is setting the lights and from there we know where to look.
If you are just testing, you can take the tire and rim off. To replace the bearing if that is where diagnosis leads, you will need to remove the nut, brake rotor and caliper.
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The wheel speed sensor is inside and part of the wheel bearing. You cannot replace the bearing with out replacing the sensor and vice versa.
Please turn your caps off.
Yes, remove the tire and go from there. Remember that the sensor harness around the lower ball joint is often where the wires break if that is the issue. Because we don't have the codes, we are working of common issues and an educated guess.
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