1999 Chevrolet Silverado LS from North America - Comments

Problem with wheel speed sensor inputs at low speeds.

I recently purchased a '99 Silverado from the dealership where I work. One of the problems I have experienced is with the wheel speed sensor inputs at low speeds. The bad inputs will be a few miles/hour off from the rest of them resulting in an Anti-lock Brake System failure. Distance to stop the vehicle is greatly increased and is very undesirable. This condition, most of the time will not set a trouble code and has to be checked at a dealership or at a garage with proper equipment.

The other problem is a buzzing noise that I have identified is the pump motor running. This is usually caused by a defective Electronic Brake Control Module. I have changed at least 4 of these on other trucks.

Both conditions described are very costly, especially for the average person whose warranty has run out. They are both also a potential traffic hazzard. As of now, I know no other way to correct either problem other than replacing the defective parts. I suggest you watch your rear view mirror, as there could another Chevrolet product that has to play "bumper tag" because it can't stop. Hopefully, we will not be "it!"

You can get your ABS module rebuilt at Circuit Solutions for only $100. The pump running problem will be fixed once and for all and you will save $900 or more. The is no need to replace the EBCM anymore. Circuit Solutions can be found at www.circuitsolutions.info.

Remove the front wheels calipers and rotors. Remove the Wheel Speed Sensor. Remove rust build-up from around sensor mounting surface. Be careful not to let debris fall into the hole. A earplug works great for this. Replace Sensor, Rotors, Calipers and Wheels.

For the last person who gave feedback. What do you do if the connection (speed sensor) is broken. What is the procedure to replace it and where can you get the part? Thanks. Joe_Mich@rocketmail.com.