Same Old Abs Problem Activating At Low Speeds

[dawacenske]

I have a 2003 silverado extended cab 2wd. The abs activates at low speeds I replaced the wheel speed sensors on the front hubs it still does it and seems to be a little worse. what else would cause this to happen. I've read alot of post that say there is a recall but don't see anything for 2003. How do i check to see if these sensors that i bought are any good. any help you can give me would be great

 

thanks don

[98 Z71 SLT]

The problem is that you have an "air-gap" between the sensor mounting pad and the wheel hub itself. In other words:rust and corrosion

 

Take the sensors off the hubs again. This time, take a small file, and clean the mounting pads. Make it shiny and spotless. Install your sensors, and you'll be good to go.

 

The rust/corrosin on the hubs tricks the sensors into thinking that the wheels are actually locked up, which causes a low speed ABS cycle to happen.

[Guymoe]

The problem is that you have an "air-gap" between the sensor mounting pad and the wheel hub itself. In other words:rust and corrosion

 

Take the sensors off the hubs again. This time, take a small file, and clean the mounting pads. Make it shiny and spotless. Install your sensors, and you'll be good to go.

 

The rust/corrosin on the hubs tricks the sensors into thinking that the wheels are actually locked up, which causes a low speed ABS cycle to happen.

 

+ 1...Same thing happened....

[dawacenske]

The problem is that you have an "air-gap" between the sensor mounting pad and the wheel hub itself. In other words:rust and corrosion

 

Take the sensors off the hubs again. This time, take a small file, and clean the mounting pads. Make it shiny and spotless. Install your sensors, and you'll be good to go.

 

The rust/corrosin on the hubs tricks the sensors into thinking that the wheels are actually locked up, which causes a low speed ABS cycle to happen.

 

+ 1...Same thing happened....

 

Ill try it again and see what happens. After all Im getting pretty good at ripping the brake system down. Ill get back and let you know how I made out thanks for your help

[dawacenske]

The problem is that you have an "air-gap" between the sensor mounting pad and the wheel hub itself. In other words:rust and corrosion

 

Take the sensors off the hubs again. This time, take a small file, and clean the mounting pads. Make it shiny and spotless. Install your sensors, and you'll be good to go.

 

The rust/corrosin on the hubs tricks the sensors into thinking that the wheels are actually locked up, which causes a low speed ABS cycle to happen.

 

+ 1...Same thing happened....

 

Ill try it again and see what happens. After all Im getting pretty good at ripping the brake system down. Ill get back and let you know how I made out thanks for your help

 

well i took off the speed sensors again and filed them down to bare metal it still activates sometimes not nearly as much as it did. i greased everything. one thing i'm noticing is when i install them they don't seem to seal tightly when you put the allan bolt on it lifts the sensor side a little bit is there anything i can use to seal this small gap

[MikeInCtown]

There is a spec for how much space there needs to be. If someone has those numbers you may be able to bend the bracket accordingly to make sure you have the correct gap.