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U073 is a communication code from one module to another to simply put it. Code U073 refers to a communication problem with the electronic brake control module ( Which controls ABS/Traction and stability ). I would suspect a loose connection/shorted wiring or even possible internal problem with the brake control module.If the issue occurs after hitting a bump, most likely a loose connection or the wiring rubbing somewhere causing a short from the brake control module.
Check the abs sensor on that wheel and it's wiring. It sits very close to brake disk and could be loose or fouls by dirt and corrosion. Easy to replace.
It is likely the EBCM it can cost a bit to fix. Have it scanned at Autozone or a GM dealer. Your brakes will function fine if it is but you will have no anti lock brakes.
This is usually caused by one of the front wheel speed sensors dropping signal under 10MPH. the first thing to try is to remove both front wheel speed sensors (Behind brake rotors) and clean the area where te sensor goes into the hole. Then lightly grease the sensor O ring and reinstall it.
Yes, I never did like ABS brakes because of this. What you have experienced is the ABS system working as it is designed to do. I know, it doesn't seem like you should still be moving after slamming on the brakes, but here is how it works;
When you apply a fast and hard pedal and the ground beneath you is wet the wheels stop at different times. There are sprockets mounted to the rear of the rotors, with magnetic sensors that monitor the wheel info. for all four wheels mounted next to the brake calipers. On a hard stop when the sensor detects one wheel stopping and another still going, these sensors send "pulses" to each wheel until the vehicle has stopped without the brakes having to lock up. The pulsiing is what you experienced and is a normal part of the ABS function.
Please rate this and let me know if it helped.
can not read under the dash fuse diagram
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